灵性生活不是让我们脱离这个世界，而是引领我们更深地融入其中。

The only limits you have are the ones you set for yourself.

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

活着是世界上最罕见的事情。大多数人只是存在，仅此而已。

The future of democracy depends on the ability of democratic societies to reform themselves and adapt to new challenges.