Existentialist philosopher Jean-Paul Sartre argues that most people never accept this gaping responsibility over the course of their lives, but instead will blame society, religion, luck, parents, and so on when things go wrong. But to do so, argues the philosopher, is to live in “bad faith”. We must, he believes, accept that we have the freedom to choose and direct the course of our lives. To do so is to gain ‘personal authority’, or what’s commonly referred to as ‘growing up’.