You do not settle whether an argument is justified by merely showing that it is of some use. The distinction is not between useful and useless experiments but between barbarous and civilized behaviour. Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.

We educate one another; and we cannot do this if half of us consider the other half not good enough to talk to.

God made the world as an artist and that is why the world must learn from its artists.

Use your health, even to the point of wearing it out. That is what it is for. Spend all you have before you die; do not outlive yourself.

Like fingerprints, all marriages are different.

We must not stay as we are, doing always what was done last time, or we shall stick in the mud. Yet neither must we undertake a new world as catastrophic Utopians, and wreck our civilization in our hurry to mend it.

Spend all you have before you die, and do not outlive yourself.