You cannot improve your past, but you can improve your future. Once time is wasted, life is wasted. 你不能改变你的过去，但你可以让你的未来变得更美好。一旦时间浪费了，生命就浪费了。
Time is money. 时间就是金钱。
The best preparation for tomorrow is doing your best today. 对明天做好的准备就是今天做到最好！
Stick to it, and you‘ll succeed. 只要人有恒，万事都能成。
Light come, light go. 来得容易，去得快。
Learn and live. 活着，为了学习。
