When you are painting you should take a flat mirror and often look at your work within it, and it will then be seen in reverse, and will appear to be by the hand of some other master, and you will be better able to judge of its faults than in any other way.

Our body is dependent on heaven and heaven on the Spirit.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

To speak ill of a good person is not truly good, all in all.

Whoever in debate quotes authority uses not intellect, but memory.

Life, when is spent well, is long.

One can have no smaller or greater mastery than mastery of oneself.