A man has as many social selves as there are individuals who recognize him.

Belief is desecrated when given to unproved and unquestioned statements for the solace and private pleasure of the believer . . . It is wrong always, everywhere, and for every one, to believe anything upon insufficient evidence.

Philosophy is "an unusually stubborn attempt to think clearly.

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.

It is very important that teachers should realize the importance of habit.

The old question of whether there is design is idle. The real question is what is the world, whether or not it have a designer--and that can be revealed only by the study of all nature's particulars.

No one sees further into a generalization than his own knowledge of detail extends.