The happy life is thought to be one of excellence; now an excellent life requires exertion, and does not consist in amusement.

The body is at its best between the ages of thirty and thirty-five.

It is clear, then, that wisdom is knowledge having to do with certain principles and causes. But now, since it is this knowledge that we are seeking, we must consider the following point: of what kind of principles and of what kind of causes is wisdom the knowledge?

They - Young People have exalted notions, because they have not been humbled by life or learned its necessary limitations; moreover, their hopeful disposition makes them think themselves equal to great things - and that means having exalted notions. They would always rather do noble deeds than useful ones: Their lives are regulated more by moral feeling than by reasoning - all their mistakes are in the direction of doing things excessively and vehemently. They overdo everything - they love too much, hate too much, and the same with everything else.

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

But what is happiness? If we consider what the function of man is, we find that happiness is a virtuous activity of the soul.

The intention makes the crime.