大蕭條是20世紀(jì)歷史上的一個決定性時刻，理解其原因和后果仍然是經(jīng)濟學(xué)家的一項重要任務(wù)。
一件事不一定是真的或假的；它可能既是真的又是假的。
最好的領(lǐng)導(dǎo)者是那些激勵他人做到最好的人。
I was poor white trash, no glitter, no glamour.
The lithium-ion battery is something that has impacted the world in a very big way.
I am not a perfect person, but I am trying every day to concentrate on being better.
"Memory is a strange thing. It doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter. It creates a picture, but it's not always the same picture."