Any voter with a healthy understanding of the flaws of human nature and who notices the vast amounts of money solicited and received by politicians cannot help but believe that we are unduly influenced by our benefactors' generosity,

There's an aspect of human nature in which we want to think we're better than somebody else. They're a different color. They speak a different language. They have a different name for the Creator. Whatever it is, that makes it okay for me to hate them, to try to get some of their land or some of their resources.

As for the law--it catered for a human nature of which it took a naturally low view.

The science of the mind can only have for its proper goal the understanding of human nature by every human being, and through its use, brings peace to every human soul.

We need more understanding of human nature, because the only real danger that exists is man himself . . . We know nothing of man, far too little. His psyche should be studied because we are the origin of all coming evil.

His works (taken together) are almost like a new edition of human nature.