It is in our hearts that evil lies, and it is from our hearts that it must be plucked out.

And if there were a God, I think it very unlikely that He would have such an uneasy vanity as to be offended by those who doubt His existence

It is the things for which there is no evidence that are believed with passion.

I feel as if one would only discover on one's death bed what one ought to have lived for

The question of "unreality"is a very important one. Misled by grammar, the great majority of those logicians who have dealt with this question have dealt with it on mistaken lines. They have regarded grammatical form as a surer guide in analysis than, in fact, it is. And they have not known what differences in grammatical form are important.

I suppose the advocates of unreason think that there is a better chance of profitably deceiving the populace if they keep it in a state of effervescence.

Science, in its ultimate ideal, consists of a set of propositions arranged in a hierarchy, the lowest level of the hierarchy being concerned with particular facts, and the highest with some general law, governing everything in the universe. The various levels in the hierarchy have a two-fold logical connection, travelling one up, one down; the upward connection proceeds by induction, the downward by deduction.