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.

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.

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,

A man receiving charity always hates his benefactor- it is a fixed characteristic of human nature

The more we study human nature, the less we think of men - the more of man

They know that it is human nature to take up causes whereby a man may oppress his neighbor, no matter how unjustly... Hence they have had no trouble in finding men who would preach the damnability and heresy of the new doctrine from the very pulpit..