The body of the earth is of the nature of a fish... because it draws water as its breath instead of air.

Of several bodies, all equally large and equally distant, that which is most brightly illuminated will appear to the eye nearest and largest.

I have solved what color is, however ; I still have no idea about what line is.

You don't get into trouble because of the things you don't know. It is the things you don't know you don't know that really get you into a mess.

Thirst will parch your tongue and your body will waste through lack of sleep ere you can describe in words that which painting instantly sets before the eye.

Obstacles cannot bend me. Every obstacle yields to effort.

Ask counsel of him who rules himself well.