Can any man be courageous who has the fear of death in him?

Let no-one ignorant of geometry enter. Said to have been inscribed above the door of Plato's Academy.

It is fear and terror that make all men brave, except the philosophers. Yet it is illogical to be brave through fear and cowardice.

Justice means minding one's own business and not meddling with other men's concerns.

Moderation, which consists in indifference about little things, and in a prudent and well-proportioned zeal about things of importance, can proceed from nothing but true knowledge, which has its foundation in self-acquaintance.

Those having torches will pass them on to others.

. . . Then anyone who leaves behind him a written manual, and likewise anyone who receives it, in the belief that such writing will be clear and certain, must be exceedingly simple-minded. . . .