 Aquinas neglects to spell out how these first principles come to be understood. But he holds that they are understood and accepted by everyone who has enough experience to understand their terms. The process of coming to understand a first practical principle may be exemplified as follows, in relation to the basic good of knowledge. As a child one experiences the inclination to ask questions, and to greet apparently satisfactory answers with satisfaction and failure to answer as a disappointment. At some point one comes to understand – has the insight – that such answers are instances of a quite general standing possibility, namely knowledge, coming to know and overcoming ignorance. By a distinct though often well nigh simultaneous further insight one comes to understand that this – knowledge – is not merely a possibility but also a good [bonum], that is to say an opportunity, a benefit, something desirable as a kind of improvement (a perfectio) of one’s or anyone’s condition, and as to be pursued.