Reserve your right to think, for even to think wrongly is better than not to think at all.

To teach superstitions as truth is a most terrible thing.

Fables should be taught as fables, myths as myths, and miracles as poetic fancies.

It is not that we have a short time to live, but that we waste much of it.

-- Seneca

Imagine prisoners chained underground since childhood, seeing only shadows on a wall and taking them for reality.

-- Plato

Blue dye is extracted from the indigo plant, yet it is bluer than indigo itself.

-- Xunzi

We survive through adversity and perish through comfort.

-- Mencius

What does not kill me makes me stronger.

-- Friedrich Nietzsche

The true is the whole.

-- Georg Wilhelm Friedrich Hegel