In the last analysis the entire field of psychology may reduce to biological electrochemistry.

I do not in the least underestimate bisexuality... I expect it to provide all further enlightenment.

It is no wonder if, under the pressure of these possibilities of suffering, men are accustomed to moderate their claims to happiness - just as the pleasure principle itself, indeed, under the influence of the external world, changed into the more modest reality principle -, if a man thinks himself happy merely to have escaped unhappiness or to have survived his suffering, and if in general the task of avoiding suffering pushes that of obtaining pleasure into the background.

Philosophers stretch the meaning of words until they retain scarcely anything of their original sense. They give the name of "God" to some vague abstraction which they have created for themselves; having done so they can pose before all the world as deists, as believers of God, and they can even boast that they have recognized a higher, purer concept of God, notwithstanding that their God is not nothing more than an insubstantial shadow and no longer the mighty personality of religious doctrines.

Our fascination with gold is related to the fantasies of early childhood.

Just as no one can be forced into belief, so no one can be forced into unbelief.

He that has eyes to see and ears to hear may convince himself that no mortal can keep a secret. If his lips are silent, he chatters with his fingertips; betrayal oozes out of him at every pore.