living for oneself is a bad thing. The keenest intellectual pleasure comes from being able to return to the self after being absent from it for a spell. But living all the time inside the self, that most tyrannical, demanding and capricious of companions - no, one shouldn't do it.

The lessons of experience are always learned too late.

Know how to replace in your heart, by the happiness of those you love, the happiness that may be wanting to yourself

God has written in the law of nature that when two people are joined in love or friendship, one must always give his heart more perfectly than the other.

The mind has no sex.

Simplicity is the most difficult thing to secure in this world; it is the last limit of experience and the last effort of genius.

Not to love is to cease to live.