Aristotle

Happiness is the meaning and the purpose of life, the whole aim and end of human existence.

Knowing yourself is the beginning of all wisdom.

Excellence is never an accident. It is always the result of high intention, sincere effort, and intelligent execution; it represents the wise choice of many alternatives—choice, not chance, determines your destiny.

The virtue of justice consists in moderation, as regulated by wisdom.

The greatest virtues are those which are most useful to other persons.

It is by doing just acts that the just man is produced, and by doing temperate acts the temperate man; without doing these no one would have even a prospect of becoming good.

The high-minded man must care more for the truth than for what people think.

The whole is greater than the sum of its parts.

To enjoy the things we ought and to hate the things we ought has the greatest bearing on excellence of character.

Every bad man is ignorant of what he ought to do and what to leave undone, and by reason of such error men become unjust and wholly evil.

Happiness belongs to the class of things precious and final.

The man who is truly good and sensible bears all fortunes, we presume, becomingly, and always does what is noblest under the circumstances.

For as it is not one swallow or one fine day that makes a spring, so it is not one day or a short time that makes a man blessed and happy.

The Good of man is the active exercise of his soul’s faculties in conformity with excellence or virtue, or if there be several human excellences or virtues, in conformity with the best and most perfect among them.