万年前古人无意留下的尿，让科学家读懂了他的生活

前古It’s going to be hard, but hard does not mean impossible.

人无让科Don’t stop when you’re tired. Stop when you’re done.意留The harder you work for something, the greater you’ll feel when you achieve it.

下的学Push yourself, because no one else is going to do it for you.读懂的生The way to get started is to quit talking and begin doing.前古Your limitation—it’s only your imagination.

人无让科Wake up with determination. Go to bed with satisfaction.意留You don’t have to be great to start, but you have to start to be great.

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

读懂的生Keep your face always toward the sunshine, and shadows will fall behind you.前古Do something today that your future self will thank you for.

人无让科The way to get started is to quit talking and begin doing.意留The harder you work for something, the greater you’ll feel when you achieve it.

下的学Believe you can and you're halfway there.读懂的生It’s going to be hard, but hard does not mean impossible.

(责任编辑：几米)