If religion cannot restrain evil, it cannot claim effective power for good.

Cruel persecutions and intolerance are not accidents, but grow out of the very essence of religion, namely, its absolute claims.

Lastly, literature and philosophy both allow past idols to be resurrected with a frequency which would be truly distressing to a sober scientist.

The method of exposition which philosophers have adopted leads many to suppose that they are simply inquiries, that they have no interest in the conclusions at which they arrive, and that their primary concern is to follow their premises to their logical conclusions.

If a philosophic theory is once ruled out of court, no one can tell when it will appear again.

The business of the philosopher is well done if he succeeds in raising genuine doubt.

The picture which the philosopher draws of the world is surely not one in which every stroke is necessitated by pure logic.