登山不因为艰难险峻就停止攀登,那么最终必定能登上峻岭。
我们必须不断挑战我们的假设,并愿意改变我们的想法。
The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.
宇宙并不比我们想象的更奇怪,而是比我们能够想象的更奇怪。
Education is an ornament in prosperity and a refuge in adversity.