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.

Grow old along with me! The best is yet to be.

The only good is knowledge and the only evil is ignorance.

当我们倾听不同的观点时，才能做出最好的决策。

你不必完美才能令人惊叹。