It often takes more courage to change one's opinion than to stick to it.

Brevity: To say at once whatever is to be said.

God creates the animals, man creates himself.

It is almost everywhere the case that soon after it is begotten the greater part of human wisdom is laid to rest in repositories.

The most heated defenders of a science, who cannot endure the slightest sneer at it, are commonly those who have not made very much progress in it and are secretly aware of this defect.

There were honest people long before there were Christians and there are, God be praised, still honest people where there are no Christians. It could therefore easily be possible that people are Christians because true Christianity corresponds to what they would have been even if Christianity did not exist.

I cannot say whether things will get better if we change; what I can say is they must change if they are to get better.