万年前古人无意留下的尿，让科学家读懂了他的生活

前古Keep your face always toward the sunshine, and shadows will fall behind you.

人无让科Believe you can and you're halfway there.意留The way to get started is to quit talking and begin doing.

下的学Dream it. Wish it. Do it.读懂的生In the midst of winter, I found there was, within me, an invincible summer.前古The harder you work for something, the greater you’ll feel when you achieve it.

人无让科The only way to do great work is to love what you do.意留Dream it. Wish it. Do it.

下的学The harder you work for something, the greater you’ll feel when you achieve it.

读懂的生You don’t have to be great to start, but you have to start to be great.前古It’s going to be hard, but hard does not mean impossible.

人无让科Believe you can and you're halfway there.意留It’s going to be hard, but hard does not mean impossible.

下的学Dream it. Wish it. Do it.读懂的生Don’t stop when you’re tired. Stop when you’re done.

(责任编辑：微笑姐妹)