期权的真正价值不在于其价格，而在于它为持有者提供的灵活性。

"We are all witnesses to the same events, but we see them differently."

Collaboration is the key to solving the world’s biggest health challenges.

"Science is not only a disciple of reason but, also, one of romance and passion."

译文：自由自在行走时，感受不到时光流逝，所到之处，都有蓑衣相伴，充满别样乐趣。

学校必须是一个让孩子学会将眼前欲望服从于更大社会利益要求的地方。