There is but one truly serious philosophical problem, and that is suicide.

One must imagine Sisyphus happy.

In the midst of winter, I found there was, within me, an invincible summer.

I rebel, therefore we exist.

The struggle itself toward the heights is enough to fill a man's heart.

It is not living that matters, but living rightly.

-- Socrates

No one desires evil.

-- Socrates

Ethics is the ground of being of human community — the way of aidagara (betweenness) between person and person.

-- Tetsuro Watsuji

Do not impose on others what you yourself do not desire.

-- Confucius

A person may cause evil to others not only by his actions but by his inaction, and in either case he is justly accountable to them for the injury.

-- John Stuart Mill

Blessedness is not the reward of virtue but virtue itself.

-- Benedictus de Spinoza