The child begins life as a pleasure-seeking animal; his infantile personality is organized around his own appetites and his own body. In the course of his rearing the goal of exclusive pleasure seeking must be modified drastically, the fundamental urges must be subject to the dictates of conscience and society, urges must be capable of postponement and in some instances of renunciation completely.
The Magic Years: Understanding and Handling the Problems of Early Childhood (ed. Simon and Schuster, 2015) - ISBN: 9781501122828