The things best to know are first principles and causes, but these things are perhaps the most difficult for men to grasp, for they are farthest removed from the senses.
Both Self-restraint and Unrestraint are a matter of extremes as compared with the character of the mass of mankind; the restrained man shows more and the unrestrained man less steadfastness than most men are capable of.
To say of what is that it is not, or of what is not that it is, is false, while to say of what is that it is, and of what is not that it is not, is true.
The happy man . . . will be always or at least most often employed in doing and contemplating the things that are in conformity with virtue. And he will bear changes of fortunes most nobly, and with perfect propriety in every way.
Whether if soul did not exist time would exist or not, is a question that may fairly be asked; for if there cannot be someone to count there cannot be anything that can be counted, so that evidently there cannot be number; for number is either what has been, or what can be, counted.
The state or political community, which is the highest of all, and which embraces all the rest, aims at good in a greater degree than any other, and at the highest good.