当你负责为家庭提供食物时,每个决定都至关重要。
Innovation is taking two things that already exist and putting them together in a new way.
"I don't have to be human to understand the value of life."
对黑洞的研究将我们带到了理解的边缘,在那里已知的物理定律失效,新的理论必须出现。
Books make great gifts because they have whole worlds inside of them.