All human beings by nature desire to know.

One swallow does not make a spring.

Virtue lies in the middle.

Virtue is a kind of mean.

Man is by nature a political animal.

It is hard to retain what you learn unless you practice it.

-- Seneca

Waste no more time arguing about what a good man should be. Be one.

-- Marcus Aurelius

It is the task of one rightly oriented toward others to draw the circles in toward the centre.

-- Hierocles

It is not learning that makes people good, but practice.

-- Gaius Musonius Rufus

The knowledge and contemplation of nature is somehow defective and incomplete unless action follows.

-- Panaetius

Courage begins the difficult deed, but fortune governs its outcome.

-- Democritus