The Mosaic religion had been a Father religion; Christianity became a Son religion. The old God, the Father, took second place; Christ, the Son, stood in His stead, just as in those dark times every son had longed to do.

Religion belonged to the infancy of humanity. Now that humanity had come of age, it should be left behind.

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.

I have found little 'good' about human beings. In my experience, most of them are trash.

Nature delights in making use of the same forms in the most various biological connections: as it does, for instance, in the appearance of branch-like structures both in coral and in plants, and indeed in some forms of crystal and in certain chemical precipitates.

I take up the standpoint that the tendency to aggression is an innate, independent, instinctual disposition in man, and I come back now to the statement that it constitutes the most powerful obstacle to culture.

The individual does actually carry on a double existence: one designed to serve his own purposes and another as a link in a chain, in which he serves against, or at any rate without, any volition of his own.