All happy families are alike; each unhappy family is unhappy in its own way.

We are to remember that we are not to take anything with us out of this world, and that it is how we have conducted ourselves here that will matter in the end.

"The moment you feel like giving up, think about why you held on for so long."

Science is about understanding the world, and medicine is about applying that understanding to help people.

"The most important thing in science is not to be right, but to be curious."

夜晚是一首伟大的交响乐，但星星是它的音符。