You only live once, but if you do it right, once is enough.

若年华未曾虚度,只活一生便也足够.

Man struggles upwards; water flows downwards.

人往高处走，水往低处流。

Live as if you were to die tomorrow. Learn as if you were to live   forever.

珍惜生活,就像死神随时来临;热爱学习,就像生命能够永恒.

Don’t wait. The time will never be just right.

始终困于等待，时机就永远不会到来

Those who turn back never reach the summit.

回头的人永远到不了最高峰！

A life without suffering is a life without happiness.          

未尝苦中苦，何来甜上甜？

看完这些内容，是不是充满斗志？马上能多背20个单词？