My belief is that no human being or society composed of human beings ever did or ever will come to much unless their conduct was governed and guided by the love of some ethical ideal.

And you very soon find out, if you have not found it out before, that patience and tenacity of purpose are worth more than twice their weight of cleverness.

The man of science has learned to believe in justification, not by faith, but by verification.

The dogma of the infallibility of the Bible is no more self-evident than is that of the infallibility of the popes.

Only a scientific people can survive in a scientific future.

The quarrels of theologians and philosophers have not been about religion, but about philosophy; and philosophers not unfrequently seem to entertain the same feeling toward theologians that sportsmen cherish toward poachers.

Irrationally held truths may be more harmful than reasoned errors.