That there are things in this world not carved out of gray stone. That there s a small place inside of us they can never lock away, and that place is called hope.

Natural gas is a bridge to a cleaner energy future, but we must cross that bridge responsibly.

The only way to do great work is to love what you do.

怀疑是艺术家最诚实的伙伴。

历史学家必须公正，但不能冷漠。