The past is always changing, because we are always changing our relationship to it.
I stand up for what I believe in, and I believe in a lot of things.
We can’t ignore the economic role of coal, but we also can’t ignore its environmental impact.
宇宙的扭曲面——黑洞、虫洞、奇点和时间扭曲——才是真正的精彩所在。
我们会死。那可能是生命的意义。但我们创造语言。那可能是衡量我们生命的标准。
"Education never ends, Watson. It is a series of lessons, with the greatest for the last."