Therefore, O students, study mathematics and do not build without foundations.
I have solved what color is, however ; I still have no idea about what line is.
In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.
Life, when is spent well, is long.
The study of what is excellent is food for the mind and body.
You must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.