What everyone wants from life is continuous and genuine happiness.

If we love something similar to ourselves, we endeavor, as far as we can, to bring it about that it should love us in return.

If we conceive that anyone loves, desires, or hates anything which we ourselves love, desire, or hate, we shall thereupon regard the thing in question with more steadfast love, etc. On the contrary, if we think that anyone shrinks from something that we love, we shall undergo vacillation of the soul.

Only free men are thoroughly grateful one to another.

I have resolved to demonstrate by a certain and undoubted course of argument, or to deduce from the very condition of human nature, not what is new and unheard of, but only such things as agree best with practice.

Nature offers nothing that can be called this man's rather than another's; but under nature everything belongs to all.

Emotion, which is suffering, ceases to be suffering as soon as we form a clear and precise picture of it.