For the best results with your children, spend only half the money you think you should, but double the time with them.
宇宙不仅比我们想象的更奇怪,而且比我们能想象的还要奇怪。
The best investment you can make is in yourself.
每一个实验,无论成功与否,都会教会我们一些有价值的东西。