Wealth does not bring excellence, but that wealth comes from excellence.

You cannot conceive the many without the one...The study of the unit is among those that lead the mind on and turn it to the vision of reality.

He whom loves touches not walks in darkness.

Not to help justice in her need would be an impiety.

[Not enough is known about solid geometry] and for two reasons: in the first place, no government places value on it; this leads to a lack of energy in the pursuit of it, and it is difficult. In the second place, students cannot learn it unless they have a teacher. But then a teacher can hardly be found.

The direction in which education starts a man will determine his future life.

Either death is a state of nothingness and utter consciousness, or, as men say, there is a change and migration of the soul from this world to another. Now if death be of such a nature, I say that to die is to gain; for eternity is then only a single night.