One isn't born one's self. One is born with mass of expectations, a mass of other people's ideas—and you have to work through it all.
Look at a day when you are supremely satisfied at the end. It's not a day when you lounge around doing nothing; it's a day you've had everything to do and you've done it.
对早期宇宙的研究不仅仅是关于理解过去,也是关于揭示支配所有现实的基本法则。