What everyone wants from life is continuous and genuine happiness.

Nothing in nature is by chance... Something appears to be chance only because of our lack of knowledge.

The terms good and bad indicate no positive quality in things regarded in themselves, but are merely modes of thinking or notions, which we form from the comparison of things one with another. Thus one and the same thing can be at the same time good, bad, and indifferent. For instance, music is good for him that is melancholy, bad for him that mourns; for him that is deaf; it is neither good nor bad.

The greatest good is the knowledge of the union which the mind has with the whole nature.

The endeavor to understand is the first and only basis of virtue.

In the state of nature, wrong-doing is impossible ; or, if anyone does wrong, it is to himself, not to another.

If anyone conceives, that an object of his love joins itself to another with closer bonds of friendship than he himself has attained to, he will be affected with hatred towards the loved object and with envy towards his rival.