To be a philosopher, that is to say, a lover of wisdom (for wisdom is nothing but truth), it is not enough for a man to love truth, in so far as it i… - Arthur Schopenhauer

Boundless compassion for all living beings is the surest and most certain guarantee of pure moral conduct, and needs no casuistry. Whoever is filled with it will assuredly injure no one, do harm to no one, encroach on no man's rights; he will rather have regard for every one, forgive every one, help every one as far as he can, and all his actions will bear the stamp of justice and loving-kindness. … In former times the English plays used to finish with a petition for the King. The old Indian dramas close with these words: "May all living beings be delivered from pain." Tastes differ; but in my opinion there is no more beautiful prayer than this.

So if you have to live amongst men, you must allow everyone the right to exist in accordance with the character he has, whatever it turns out to be: and all you should strive to do is to make use of this character in such a way as its kind and nature permit, rather than to hope for any alteration in it, or to condemn it off-hand for what it is. This is the true sense of the maxim — Live and let live. That, however, is a task which is difficult in proportion as it is right; and he is a happy man who can once for all avoid having to do with a great many of his fellow creatures.

Es gibt nur eine Heilkraft, und das ist die Natur; in Salben und Pillen steckt keine. Höchstens können sie der Heilkraft der Natur einen Wink geben, wo etwas für sie zu tun ist.