The more rational statement is that we feel sorry because we strike, afraid because we tremble, and not that we cry, strike, or tremble because we are sorry, angry, or fearful as the case may be.

Let everything you do be done as if it makes a difference.

The whole drift of my education goes to persuade me that the world of our present consciousness is only one out of many worlds of consciousness that exist.

Man alone of all the creatures of earth can change his own pattern. Man alone is the architect of his own destiny.

Life is one long struggle between conclusions based on abstract ways of conceiving cases, and opposite conclusions prompted by our instinctive perception of them.

In the matter of belief, we are all extreme conservatives.

Man lives for science as well as bread.