I will jump into the river to save two brothers or eight cousins.

While I do not suggest that humanity will ever be able to dispense with its martyrs, I cannot avoid the suspicion that with a little more thought and a little less belief their number may be substantially reduced.

It was a reaction from the old idea of "protoplasm", a name which was a mere repository of ignorance.

Haldane was engaged in discussion with an eminent theologian. "What inference," asked the latter, "might one draw about the nature of God from a study of his works?" Haldane replied: "An inordinate fondness for beetles."

This is my prediction for the future: Whatever hasn't happened will happen, and no one will be safe from it.

We must learn not to take traditional morals too seriously. And it is just because even the least dogmatic of religions tends to associate itself with some kind of unalterable moral tradition, that there can be no truce between science and religion.

Would I lay down my life to save my brother? No, but I would to save two brothers or eight cousins.