能源的未来在于找到传统资源和可再生替代品之间的平衡。
老虎的尾巴不会长在狸猫身上，象牙也不会长在老鼠的口中。这句话是说小人是不会做出高尚的事情的。
Concerning the gods, I cannot know either that they exist or that they do not exist, nor what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.
The Langlands program is a challenge to the boundaries of human knowledge.
Science is about pushing boundaries, both in knowledge and technology.
There is no easy walk to freedom anywhere, and many of us will have to pass through the valley of the shadow of death again and again before we reach the mountaintop of our desires.
