数学的美在于它能够用一种超越文化和语言障碍的语言来描述宇宙。
Better never means better for everyone... It always means worse, for some.
To me, fearless is not the absence of fear. It's not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things, every single day.
If you borrow something, try to return it in better shape than you received it. Clean it, sharpen it, fill it up.