Spinoza, Baruch (Baruch Spinoza)

As for the terms good and bad, they indicate no positive quality in things regarded in themselves, but are merely modes of thinking, or notions which we form from the comparison of things with one another. Thus one and the same thing can be at the same time good, bad, and indifferent. For instance music is good for him that is melancholy, bad for him who mourns; for him who is deaf, it is neither good nor bad.
-- Baruch Spinoza

As men's habits of mind differ, so that some more readily embrace one form of faith, some another, for what moves one to pray may move another to scoff, I conclude... that everyone should be free to choose for himself the foundations of his creed, and that faith should be judged only by its fruits.
-- Baruch Spinoza

Ignorantia non est argumentum.

Ignorance is no argument.
-- Baruch Spinoza

The order and connection of ideas is the same as the order and connection of things.
-- Baruch Spinoza

Do not weep; do not wax indignant. Understand.
-- Baruch Spinoza

I have taken great care not to laugh at human actions, not to weep at them, nor to hate them, but to understand them.
-- Baruch Spinoza