Meaning is a concept fundamental to semiotics, linguistics, psychology, sociology, philosophy and all other fields of human observation and study. The uses of the term in many fields more or less overlap, with differing ways in which it is related to other concepts and defined or delineated by other terms. In semiotics, the meaning of a sign is determined by its place or set of roles in sign relations. In linguistics, meaning is what a source or sender expresses, communicates, or conveys in their messages to the observer or receiver, or what the receiver infers from the current context.

Any concepts or words which have been formed in the past through the interplay between the world and ourselves are not really sharply defined with respect to their meaning: that is to say, we do not know exactly how far they will help us in finding our way in the world. ~ Werner Heisenberg

Wouldst thou learn thy Lord’s meaning in this thing? Learn it well: Love was His meaning. ~ Julian of Norwich

I don’t know whether this world has a meaning that transcends it. But I know that I cannot know that meaning and that it is impossible for me just now to know it. What can a meaning outside my condition mean to me? I can understand only in human terms. What I touch, what resists me — that I understand. And these two certainties — my appetite for the absolute and for unity and the impossibility of reducing this world to a rational and reasonable principle — I also know that I cannot reconcile them. What other truth can I admit without lying, without bringing in a hope I lack and which means nothing within the limits of my conditions?

When the imaginationsleeps, words are emptied of their meaning: a deaf population absent-mindedly registers the condemnation of a man. … there is no other solution but to speak out and show the obscenity hidden under the verbal cloak.

"When I use a word," Humpty Dumpty said in rather a scornful tone, "it means just what I choose it to mean — neither more nor less."
"The question is," said Alice, "whether you can make words mean so many different things."
"The question is," said Humpty Dumpty, "which is to be master — that's all."

The sign of a truly totalitarian culture is that important truths simply lack cognitive meaning and are interpretable only at the level of "Fuck You", so they can then elicit a perfectly predictable torrent of abuse in response. We've long ago reached that level.

Noam Chomsky, in in a letter to Alexander Cockburn (1 March 1990), later paraphrased in Deterring Democracy (1992) p. 345

What is the meaning of human life, or of organic life altogether? To answer this question at all implies a religion. Is there any sense then, you ask, in putting it? I answer, the man who regards his own life and that of his fellow creatures as meaningless is not merely unfortunate but almost disqualified for life.

The traditional religions worry me. Their long history proves that they have not understood the meaning of the commandment: Thou shalt not kill. If we want to save this world from unimaginable destruction we should concentrate not on the faraway God, but on the heart of the individual.

Albert Einstein, as quoted in Einstein and the Poet : In Search of the Cosmic Man (1983) by William Hermanns

The Letheri are masters at corruptingwords, their meanings. They call warpeace, they call tyrannyliberty. On which side of the shadow you stand decides a word's meaning. Words are the weapons used by those who see others with contempt. A contempt which only deepens when they see how those others are deceived and made into fools because they choose to believe. Because in their naivety they thought the meaning of a word was fixed, immune to abuse.

A thought transfixed me: for the first time in my life I saw the truth as it is set into song by so many poets, proclaimed as the final wisdom by so many thinkers. The truth — that love is the ultimate and the highest goal to which man can aspire. Then I grasped the meaning of the greatestsecret that humanpoetry and human thought and belief have to impart: The salvation of man is through love and in love. … For the first time in my life I was able to understand the meaning of the words, "The angels are lost in perpetual contemplation of an infiniteglory."

The way in which a man accepts his fate and all the suffering it entails, the way in which he takes up his cross, gives him ample opportunity — even under the most difficult circumstances — to add a deeper meaning to his life. It may remain brave, dignified and unselfish. Or in the bitter fight for self-preservation he may forget his human dignity and become no more than an animal. Here lies the chance for a man either to make use of or to forgo the opportunities of attaining the moral values that a difficult situation may afford him. And this decides whether he is worthy of his sufferings or not.

Ultimately, man should not ask what the meaning of his life is, but rather must recognize that it is he who is asked. In a word, each man is questioned by life; and he can only answer to life by answering for his own life; to life he can only respond by being responsible.

What man actually needs is not a tensionless state but rather the striving and struggling for some goal worthy of him. What he needs is not the discharge of tension at any cost, but the call of a potential meaning waiting to be fulfilled by him.

I do not recommend any legislative action against hermeneutics. I am a liberal person opposed to all unnecessary state limitation of individual liberties. Hermeneutics between consenting adults should not, in my view, be the object of any statutory restrictions. I know, only too well, what it would entail. Hermeneutic speakeasies would spring up all over the place, smuggled Thick Descriptions would be brought in by the lorry-load from Canada by the Mafia, blood and thick meaning would clot in the gutter as rival gangs of semiotic bootleggers slugged it out in a series of bloody shoot-outs and ambushes. Addicts would be subject to blackmail. Consumption of deep meanings and its attendant psychic consequences would in no way diminsh, but the criminal world would benefit, and the whole fabric of civil society would be put under severe strain. Never!

Any concepts or words which have been formed in the past through the interplay between the world and ourselves are not really sharply defined with respect to their meaning: that is to say, we do not know exactly how far they will help us in finding our way in the world. We often know that they can be applied to a wide range of inner or outer experience, but we practically never know precisely the limits of their applicability. This is true even of the simplest and most general concepts like "existence" and "space and time". Therefore, it will never be possible by pure reason to arrive at some absolute truth.
The concepts may, however, be sharply defined with regard to their connections... a group of connected concepts may be applicable to a wide field of experience and will help us to find our way in this field. But the limits of the applicability will in general not be known, at least not completely...

Werner Heisenberg, in Physics and Philosophy: The Revolution in Modern Science (1958), lectures delivered at University of St. Andrews, Scotland, Winter 1955-56

I believe that I am not responsible for the meaningfulness or meaninglessness of life, but that I am responsible for what I do with the life I've got.

I desired oftentimes to learn what was our Lord’s meaning. And fifteen years after, and more, I was answered in ghostly understanding, saying thus: Wouldst thou learn thy Lord’s meaning in this thing? Learn it well: Love was His meaning. Who shewed it thee? Love. What shewed He thee? Love. Wherefore shewed it He? For Love. Hold thee therein and thou shalt learn and know more in the same. But thou shalt never know nor learn therein other thing without end.Thus was I learned that Love was our Lord’s meaning.

The search for meaning is not limited to science: it is constant and continuous--all of us engage in it during all our waking hours the search continues even in our dreams. There are many ways of finding meaning, and there are no absolute boundaries separating them.

One can find meaning in poetry as well as in science in the contemplations of a flower as well as in the grasp of an equation. We can be filled with wonder as we stand under the majestic dome of the night sky and see the myriad lights that twinkle and shine in its seemingly infinite depths. We can also be filled with awe as we behold the meaning of the formulae that define the propagation of light in space, the formation of galaxies, the synthesis of chemical elements, and the relation of energy, mass and velocity in the physical universe. The mystical perception of oneness and the religious intuition of a Divine intelligence are as much a construction of meaning as the postulation of the universal law of gravitation.

A genuine work of artmust mean many things; the truer its art, the more things it will mean. If my drawing, on the other hand, is so far from being a work of art that it needs THIS IS A HORSE written under it, what can it matter that neither you nor your child should know what it means? It is there not so much to convey a meaning as to wake a meaning. If it do not even wake an interest, throw it aside. A meaning may be there, but it is not for you. If, again, you do not know a horse when you see it, the name written under it will not serve you much.

One difference between God's work and man's is, that, while God's work cannot mean more than he meant, man's must mean more than he meant. For in everything that God has made, there is layer upon layer of ascending significance; also he expresses the same thought in higher and higher kinds of that thought: it is God's things, his embodied thoughts, which alone a man has to use, modified and adapted to his own purposes, for the expression of his thoughts; therefore he cannot help his words and figures falling into such combinations in the mind of another as he had himself not foreseen, so many are the thoughts allied to every other thought, so many are the relations involved in every figure, so many the facts hinted in every symbol. A man may well himself discover truth in what he wrote; for he was dealing all the time with things that came from thoughts beyond his own.

It's all very well to laugh at the military, but when one considers the meaning of life, it is a struggle between alternative viewpoints of life itself. And without the ability to defend one's own viewpoint against other perhaps more aggressive ideologies, then reasonableness and moderation could, quite simply, disappear. That is why we'll always need an army, and may God strike me down were it to be otherwise.