绝不是一种不理性的幻想：在未来的存在中，我们会把现在的存在视为一场梦。

The best time to plant a tree was 20 years ago. The second best time is now.

"A book is a dream that you hold in your hand."

You know — one loves the sunset， when one is so sad.

追求物理学的统一理论不仅仅是一项学术活动；它是理解现实本质的旅程。