世界上最好和最美的东西是看不见甚至摸不着的——它们必须用心去感受。
The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.
Nature tends to produce constancy in all her works, but she does not always succeed.
In the quest to understand the fundamental nature of reality, we must be prepared to question even our most cherished assumptions.
I'm not sad. I'm not happy. I'm just here.