It is, however, a most astonishing but incontestable fact, that the history of the evolution of man as yet constitutes no part of general education. Indeed, our so-called "educated classes" are to this day in total ignorance of the most important circumstances and the most remarkable phenomena which Anthropogeny has brought to light.

Civilization and the life of nations are governed by the same laws as prevail throughout nature and organic life.

The real cause of personal existence is not the favor of the Almighty, but the sexual love of one's earthly parents.

Ontogeny re-capitulates phylogeny.

Man is not distinguished from [the animals] by a special kind of soul, or by any peculiar and exclusive psychic function, but only by a higher degree of psychic activity, a superior stage of development.

There is no doubt that the course and character of the feared 'European war'... will become the first world war in the full sense of the word.

As our mother-earth is a mere speck in the sunbeam in the illimitable universe, so man himself is but a tiny grain of protoplasm in the perishable framework of organic nature.