Still, it will sometimes strike a scientific man that the philosophers have been less intent on finding out what the facts are, than on inquiring what belief is most in harmony with their system.

The essence of belief is the establishment of a habit; and different beliefs are distinguished by the different modes of action to which they give rise.

All the progress we have made in philosophy ... is the result of that methodical skepticism which is the element of human freedom.

The truth is, that common-sense, or thought as it first emerges above the level of the narrowly practical, is deeply imbued with that bad logical quality to which the epithet metaphysical is commonly applied; and nothing can clear it up but a severe course of logic.

And what, then, is belief? It is the demi-cadence which closes a musical phrase in the symphony of our intellectual life.

Still, it will sometimes strike a scientific man that the philosophers have been less intent on finding out what the facts are, than on inquiring what belief is most in harmony with their system.

Mathematics is distinguished from all other sciences except only ethics, in standing in no need of ethics.