大脑是一种计算机，但它与我们习惯的计算机非常不同。
The brain is a kind of computer, but it's a very different kind of computer from the ones we're used to.
免费的疫苗比昂贵的治疗更有价值，但更难推广。
The book is not an end in itself, it is a means of evocation.
You have to believe in yourself when no one else does.
If you can run a company, you can run a country.