Whoever fights monsters should see to it that in the process he does not become a monster. And when you gaze long into an abyss, the abyss gazes also into you.

He who has a why to live can bear almost any how.

God is dead! God remains dead! And we have killed him!

One must still have chaos in oneself to give birth to a dancing star.

What does not kill me makes me stronger.

You must learn all things: both the steadfast heart of well-rounded Truth and the opinions of mortals, in which there is no true trust.

-- Parmenides

For thinking and Being are the same.

-- Parmenides

Those who understand that things arise dependently know them to be empty.

-- Nagarjuna

Knowing is the beginning of action; action is the completion of knowing.

-- Wang Yangming

The world is my representation.

-- Arthur Schopenhauer

Knowledge is the conformity of the object and the intellect.

-- Averroes