"Throw away my book: you must understand that it represents only one of a thousand attitudes. You must find your own. If someone else could have done something as well as you, don’t do it. If someone else could have said something as well as you, don’t say it—or written something as well as you, don’t write it. Grow fond only of that which you can find nowhere but in yourself, and create out of yourself, impatiently or patiently, ah! that most irreplaceable of beings."

Source: Pretexts: Reflections on Literature and Morality. Book by André Gide, edited by Justin O'Brien, 1964.