In laying hands upon the sacred ark of absolute permanency, in treating the forms that had been regarded as types of fixity and perfection as originating and passing away, the Origin of Species introduced a mode of thinking that in the end was bound to transform the logic of knowledge, and hence the treatment of morals, politics, and religion.

For in spite of itself any movement that thinks and acts in terms of an ‘ism becomes so involved in reaction against other ‘isms that it is unwittingly controlled by them. For it then forms its principles by reaction against them instead of by a comprehensive, constructive survey of actual needs, problems, and possibilities.

One can think effectively only when one is willing to endure suspense and to undergo the trouble of searching.

The mere absorption of facts and truths is so exclusively an individual affair that it tends very naturally to pass into selfishness. There is no obvious social motive for the acquirement of mere learning, there is no clear social gain in success thereat.

If there is one conclusion to which human experience unmistakably points it is that democratic ends demand democratic methods for their realization.

Since in reality there is nothing to which growth is relative save more growth, there is nothing to which education is subordinate save more education.‎

If a person cannot foresee the consequences of his act, and is not capable of understanding what he is told about its outcome by those with more experience, it is impossible for him to guide his act intelligently. In such a state, every act is alike to him.