Human nature is not nearly as bad as it has been thought to be.

We fear our highest possibilities. We are generally afraid to become that which we can glimpse in our most perfect moments, under conditions of great courage. We enjoy and even thrill to godlike possibilities we see in ourselves in such peak moments. And yet we simultaneously shiver with weakness, awe, and fear before these very same possibilities.

One's only failure is failing to live up to one's own possibilities.

Religion becomes a state of mind achievable in almost any activity of life, if this activity is raised to a suitable level of perfection.

In order for us to become truly happy, that which we can become, we must become.

I have discovered the missing link between the anthropoid apes and civilized men. It's us!

There are no perfect human beings! Persons can be found who are good, very good indeed, in fact, great. There do in fact exist creators, seers, sages, saints, shakers, and movers...even if they are uncommon and do not come by the dozen. And yet these very same people can at times be boring, irritating, petulant, selfish, angry, or depressed. To avoid disillusionment with human nature, we must first give up our illusions about it.