可持续发展不是一种选择;它是能源未来的必要条件。
The strength of a habit is a function of the number of times it has been reinforced.
The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.
预言未来最好的方法是回顾过去
The past does not have to define the future.
People fall so in love with my pain but they follow me to see me fail.