No tempting form of error is without some latent charm derived from truth.

My personal conviction is that science is concerned wholly with truth, not with ethics.

As long as man remains an inquiring animal, there can never be a complete unanimity in our fundamental beliefs. The more diverse our paths, the greater is likely to be the divergence of beliefs.

Man is by nature competitive, combative, ambitious, jealous, envious, and vengeful.

Human nature, as manifested in tribalism and nationalism, provides the momentum of the machinery of human evolution.

It is just because civilization is ever evolving, changing, and becoming more complicated, that experts find it so difficult to define it in explicit terms.

The German Fuhrer, as I have consistently maintained, is an evolutionist; he has consistently sought to make the practices of Germany conform to the theory of evolution.