Every organism requires an environment of friends, partly to shield it from violent changes, and partly to supply it with its wants.

Whenever a text-book is written of real educational worth, you may be quite certain that some reviewer will say that it will be difficult to teach from it. Of course it will be difficult to teach from it. It it were easy, the book ought to be burned.

Speech is human nature itself, with none of the artificiality of written language.

Heaven knows what seeming nonsense may not tomorrow be demonstrated truth.

Fertilization of the soul is the reason for the necessity of art.

Religion is the last refuge of human savagery.

There will be some fundamental assumptions which adherents of all the variant systems within the epoch unconsciously presuppose. Such assumptions appear so obvious that people do not know what they are assuming because no other way of putting things has ever occurred to them. With these assumptions a certain limited number of types of philosophic systems are possible, and this group of systems constitutes the philosophy of the epoch.