 The term ‘authentic’ is used either in the strong sense of being “of undisputed origin or authorship”, or in a weaker sense of being “faithful to an original” or a “reliable, accurate representation”. To say that something is authentic is to say that it is what it professes to be, or what it is reputed to be, in origin or authorship. But the distinction between authentic and derivative is more complicated when discussing authenticity as a characteristic attributed to human beings. For in this case, the question arises: What is it to be oneself, at one with oneself, or truly representing one’s self? The multiplicity of puzzles that arise in conjunction with the conception of authenticity connects with metaphysical, epistemological, and moral issues (for recent discussion, see Newman and Smith 2016; Heldke and Thomsen 2014). On the one hand, being oneself is inescapable, since whenever one makes a choice or acts, it is oneself who is doing these things. But on the other hand, we are sometimes inclined to say that some of the thoughts, decisions and actions that we undertake are not really one’s own and are therefore not genuinely expressive of who one is. Here, the issue is no longer of metaphysical nature, but rather about moral-psychology, identity and responsibility.