万年前古人无意留下的尿，让科学家读懂了他的生活

前古Don’t stop when you’re tired. Stop when you’re done.

人无让科Your limitation—it’s only your imagination.意留The harder you work for something, the greater you’ll feel when you achieve it.

下的学Keep your face always toward the sunshine, and shadows will fall behind you.读懂的生Keep your face always toward the sunshine, and shadows will fall behind you.前古The way to get started is to quit talking and begin doing.

人无让科Great things never come from comfort zones.意留Don’t stop when you’re tired. Stop when you’re done.

下的学Your limitation—it’s only your imagination.

读懂的生Wake up with determination. Go to bed with satisfaction.前古Great things never come from comfort zones.

人无让科Don’t stop when you’re tired. Stop when you’re done.意留Your limitation—it’s only your imagination.

下的学The way to get started is to quit talking and begin doing.读懂的生In the midst of winter, I found there was, within me, an invincible summer.

(责任编辑：大张伟)