The communal life of human beings had . . . a two-fold foundation: the compulsion to work, which was created by external necessity, and the power of love.
Sigmund FreudThe primitive stages can always be re-established; the primitive mind is, in the fullest meaning of the word, imperishable.
Sigmund Freudall the categories which we employ to describe conscious mental acts, such as ideas, purposes, resolutions, and so on, can be applied tothese latent states.
Sigmund Freud