Eliezer Yudkowsky said this quote

There is no justice in the laws of nature, no term for fairness in the equations of motion. The Universe is neither evil, nor good, it simply does not care. The stars don't care, or the Sun, or the sky. But they don't have to! WE care! There IS light in the world, and it is US!

~ Eliezer Yudkowsky

One of chief pieces of advice I give to aspiring rationalists is Don't try to be clever. And, Listen to those quiet, nagging doubts. If you don't know, you don't know what you don't know, you don't know how much you don't know, and you don't know how much you needed to know.

~ Eliezer Yudkowsky

If you once tell a lie, the truth is ever after your enemy.

~ Eliezer Yudkowsky

And someday when the descendants of humanity have spread from star to star they won’t tell the children about the history of Ancient Earth until they’re old enough to bear it and when they learn they’ll weep to hear that such a thing as Death had ever once existed

~ Eliezer Yudkowsky