Learning is the only thing that never disappoints us.

King of the animals — as thou hast described him — I should rather say king of the beasts, thou being the greatest — because thou hast spared slaying them, in order that they may give thee their children for the benefit of the gullet, of which thou hast attempted to make a sepulchre for all animals; and I would say still more, if it were allowed me to speak the entire truth.

For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.

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.

True and great love springs out of great knowledge, and where you know little you can love but little or not at all.

Just as iron rusts from disuse... even so does inaction spoil the intellect.

The color of the object illuminated partakes of the color of that which illuminates it.