幸福的秘诀是自由，而自由的秘诀是勇气。
The secret of happiness is freedom, and the secret of freedom is courage.
释义：春天有百花盛开，秋天有明月高悬，夏天有凉风习习，冬天有雪花飘飘。如果心中没有烦恼和杂念，那么每一个季节都是美好的时光。
孩子需要玩耍的自由和时间。玩耍不是奢侈品，而是必需品。
The future of energy lies in our ability to adapt and innovate continuously.
The greatest tragedy is not death, but forgetting one's mother tongue.
Don't let anyone tell you that you can't do something.
对森林最大的威胁不是采伐，而是漠不关心。
"The past is always tense, the future perfect."