世界只存在于你的眼中。你可以让它变得很大，也可以让它变得很小。
The world only exists in your eyes. You can make it as big or as small as you want.
A program that has not been tested does not work.
Spend each day trying to be a little wiser than you were when you woke up.
You can’t change the past, but you can shape the future.