Love is nothing but joy accompanied with the idea of an eternal cause.

He who wishes to revenge injuries by reciprocal hatred will live in misery. But he who endeavors to drive away hatred by means of love, fights with pleasure and confidence; he resists equally one or many men, and scarcely needs at all the help of fortune. Those whom he conquers yield joyfully

No one doubts but that we imagine time from the very fact that we imagine other bodies to be moved slower or faster or equally fast. We are accustomed to determine duration by the aid of some measure of motion.

We can always get along better by reason and love of truth than by worry of conscience and remorse...we should strive to keep worry from our life.

If anyone conceives that he is loved by another, and believes that he has given no cause for such love, he will love that other in return.

Pride is over-estimation of oneself by reason of self-love.

To comprehend an idea, a person must simultaneously accept it as true. Conscious analysis - which, depending on the idea, may occur almost immediately or with considerable effort - allows the mind to reject what it intially accepted as fact.