Life is the continuous adjustment of internal relations to external relations.

So far from science being irreligious, as many think, it is the neglect of science that is irreligious-it is the refusal to study the surrounding creation that is irreligious.

Opinion is ultimately determined by the feelings, and not by the intellect.

If on one day we find the fast-spreading recognition of popular rights accompanied by a silent, growing perception of the rights of women, we also find it accompanied by a tendency towards a system of non-coercive education--that is, towards a practical illustration of the rights of children.

And yet, strange to say, now that this truth is recognized by most cultivated people — now that the beneficent working of the survival of the fittest has been so impressed on them that, much more than people in past times, they might be expected to hesitate before neutralizing its action — now more than ever before in the history of the world, are they doing all they can to further survival of the unfittest!

No place, no company, no age, no person is temptation-free; let no man boast that he was never tempted, let him not be high-minded, but fear, for he may be surprised in that very instant wherein he boasteth that he was never tempted at all.

The forces which are working out the great scheme of perfect happiness, taking no account of incidental suffering, exterminate such sections of mankind as stand in their way, with the same sternness that they exterminate beasts of prey and herds of useless ruminants.