Enmity is anger watching the opportunity for revenge.

Ill gotten gains will be ill spent.

The wise man knows nothing if he cannot benefit from his wisdom. Wisdom is not only to be acquired, but also to be utilized.

For no phase of life, whether public or private, whether in business or in the home, whether one is working on what concerns oneself alone or dealing with another, can be without its moral duty; on the discharge of such duties depends all that is morally right, and on their neglect all that is morally wrong in life.

There is in fact a true law namely right reason, which is in accordance with nature, applies to all men and is unchangeable and eternal. ... It will not lay down one rule at Rome and another at Athens, nor will it be one rule today and another tomorrow. But there will be one law eternal and unchangeable binding all times and upon all peoples.

It is besides necessary that whoever is brave should be a man of great soul.

We are bound by the law, so that we may be free.