Neither in my private life nor in my writings, have I ever made a secret of being an out-and-out unbeliever.

If you want to endure life, prepare yourself for death.

Tobacco is the only excuse for Columbus's misadventure in discovering America.

The inclination to aggression constitutes the greatest impediment to civilization.

The more the fruits of knowledge become accessible to men, the more widespread is the decline of religious belief.

What psycho-analysis reveals in the transference phenomena of neurotics can also be observed in the lives of some normal people. The impression they give is of being pursued by a malignant fate or possessed by some 'daemonic' power; but psycho-analysis has always taken the view that their fate is for the most part arranged by themselves and determined by early infantile influences.

"He sido un hombre afortunado en la vida, nada me ha sido facil." "I've been a fortunate man in life, nothing has come easy"