In our reasonings concerning matter of fact， there are all imaginable degrees of assurance， from the highest certainty to the lowest species of moral evidence.

Faith is the light that guides me through the darkness.

解决复杂问题的关键是提出正确的因果问题。

我从不试图取悦观众，我只做我认为对的事情。

Don't let the noise of others' opinions drown out your own inner voice.

I will never put my name on a product that does not have in it the best that is in me.