No nation was ever so virtuous as each believes itself, and none was ever so wicked as each believes the other.

Inferences of Science and Common Sense differ from those of deductive logic and mathematics in a very important respect, namely, when the premises are true and the reasoning correct, the conclusion is only probable.

In any closet, you can find it, if it is too small, or out of style, or there is just one of it where there should be two

Patriots always talk of dying for their country and never of killing for their country.

This illustrates an important truth, namely, that the worse your logic, the more interesting the consequences to which it gives rise.

When two men of science disagree, they do not invoke the secular arm; they wait for further evidence to decide the issue, because, as men of science, they know that neither is infallible. But when two theologians differ, since there is no criteria to which either can appeal, there is nothing for it but mutual hatred and an open or covert appeal to force.

We have almost reached the point where praise of rationality is held to mark a man as an old fogey regrettably surviving from a bygone age.