I've learned that you can't control everything in life, but you can control how you react to it.
我明白你无法控制生活中的一切，但你可以控制自己的反应。
最好的数学不仅正确，而且具有启发性。
In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.
