We go about our daily lives understanding almost nothing of the world.
我们在几乎对世界毫无了解的情形下进行日常生活。
We give little thought of the machinery that generates the sunlight and makes life possible.
我们对于使生命得以实现的阳光的产生机制，
To the gravity that glues us to the earth that would otherwise send us
spinning off into space.
对于将我们束缚在地球上，否则我们就会以涡旋的轨道被抛到太空去的重力，
Or to the atoms that which we are made.. and on who’s stability we fundamentally depend.
对于我们由之构成并依赖其稳定性的原子思考得很少。
Few of us spend much time wondering why nature is the way it is.
我们中很少人会用大量时间惊讶自然界为何这个样子；
Where the cosmos came from.
宇宙从何而来
Whether it was always there.
或它是否总在这儿；
If time will one day flow backward.
时间会不会有朝一日倒流，并因此导致果先于因；
Or whether there are ultimate limits to what humans can know.
或者人类认识是否有一最终的权限。
What is the smallest piece of matter.
物质的最小的部份是什么？
Why we remember the past and not the future.
为何我们记住过去而不是将来；
And why there is a universe.
为什么有一个宇宙？