While the body is still supple, it should for that reason be bent to all fashions and customs. And provided his appetite and will can be kept in check, let a young man boldly be made fit for all nations and companies, even for dissoluteness and excess, if need be. Let his training follow usage. Let him be able to do all things, and love to do only the good. […] I want him to refrain from doing evil, not for lack of power or knowledge, but for lack of will. There is a great difference between not wishing to do evil and not knowing how.

Michel de Montaigne, The Complete Essays of Montaigne (translated by Donald M. Frame)