If individuality has no play, society does not advance; if individuality breaks out of all bounds, society perishes.

History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions.

The population question is the real riddle of the sphinx, to which no political Oedipus has as yet found the answer. In view of the ravages of the terrible monster over-multiplication, all other riddle sink into insignificance.

I am too much of a sceptic to deny the possibility of anything...

The only freedom I care about is the freedom to do right; the freedom to do wrong I am ready to part with on the cheapest terms to anyone who will take it of me

That mysterious independent variable of political calculation, Public Opinion.

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.