我思故我在已被废弃;我们应说,我感受故我在。
采矿业的未来在于平衡盈利与环境责任。
I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.
The best mathematics is not just rigorous; it is also elegant.
2004年9月13日,81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说