We must make haste then, not only because we are daily nearer to death, but also because the conception of things and the understanding of them cease first.

You should always be ready to apply these two rules of action, the first, to do nothing other than what the kingly and law-making art ordains for the benefits of humankind, and, the second, to be prepared to change your mind if someone is at hand to put you right and guide you away from some groundless opinion.

Direct thy attention to what is said. Let thy understanding enter into the things that are doing and the things which do them.

To understand the true quality of people, you must look into their minds, and examine their pursuits and aversions.