The limits of the inhabited world are determined by the extent of human knowledge.
有人居住的世界的界限是由人类知识的范围决定的。
In the exploration of science, we must not only ask why but also why not.
Let us try to teach generosity and altruism, because we are born selfish.
"The future is already here – it's just not evenly distributed."
在黑暗中，我们学会珍惜光明。