Knowledge keeps no better than fish.

An unflinching determination to take the whole evidence into account is the only method of preservation against the fluctuating extremes of fashionable opinion.

The study of mathematics is apt to commence in disappointment.

The factor in human life provocative of a noble discontent is the gradual emergence of a sense of criticism, founded upon appreciation of beauty, and of intellectual distinction, and of duty.

No religion can be considered in abstraction from its followers, or even from its various types of followers.

The real history does not get written, because it is not in people's brains but in their nerves and vitals.

Inventive genius requires pleasurable mental activity as a condition for its vigorous exercise