在我们生命的不同阶段，我们都会变成完全不同的人。
Understanding black holes is understanding the fabric of the universe itself.
People are curious. A few people are. They will be driven to find things out, even trivial things. They will put things together, knowing all along that they may be mistaken.
为明天做好的最好准备就是今天做好工作。
做你自己；别人都已经有人做了。