Losses loom larger than gains in people's minds.
The Romans would never have found time to conquer the world if they had been obliged first to learn Latin.
每一种化学结合完全且仅仅依赖于两种对立的力量,即正电和负电。
Don’t be afraid to fail, be afraid not to try.
The best science fiction is not about the future; it's about the present.