The beginning is half of the whole.

He is unworthy of the name of man who is ignorant of the fact that the diagonal of a square is incommensurable with its side.

To be conquered by yourself is of all things most shameful and vile.

The orators and the despots have the least power in their cities ... since they do nothing that they wish to do, practically speaking, though they do whatever they think to be best.

The most important part of education is proper training in the nursery.

To think truly is noble and to be deceived is base.

The love of the gods belongs to anyone who has given to true virtue and nourished it, and if any human being could become immortal, it would be he.