Personality and mind, like moustaches, belong to a certain age. They are a deformity in a child.... Leave his sensibilities, his emotions, his spirit, and his mind severely alone. There is the devil in mothers, that they must provoke personalresponse from their infants.

Reflections on the Death of a Porcupine and Other Essays (ed. Cambridge University Press, 1988) - ISBN: 9780521358477