In science the important thing is to modify and change one's ideas as science advances.

The idea of disembodied spirits is wholly unsupported by evidence, and I cannot accept it.

In the supremacy of self-control consists one of the perfections of the ideal man.

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.

So long as selfishness makes government needful at all, it must make every government corrupt, save one in which all men are represented.

In assuming any office besides its essential one, the State begins to lose the power of fulfilling its essential one.

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.