The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
We feel free when we escape – even if it be but from the frying pan to the fire.
受过教育的心灵的标志是能够思考一种思想而不必接受它。
If you want to keep something precious, you have to lock it up and throw away the key.