Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.
To understand chemistry at its most fundamental level, we must look at the dance of electrons in molecules.
可持续发展不仅仅是一种趋势，而是我们对后代的责任。
心灵是由进化塑造的生物适应。
知道事情做不成于是就听之任之，这是聪明人的方法；知道事情做不成而竭尽全力的，这是忠臣孝子之心。
我们需要挑战现状，以不同的思维方式寻找更好的做事方法。