城市的伟大是由它的公共空间衡量的。

Every performance is a new challenge for me.

The past is never dead. It's not even past.

最优秀的科学家是那些在自然的复杂性面前保持谦逊的人。

Mathematics is the key and door to the sciences.

Never close your lips to those whom you have already opened your heart.

The most important thing is to be honest with yourself and with your audience.