教育的目的不是使年轻人在任何一门科学上都变得完美,而是要打开和培养他们的思维,使他们在将来学习任何科学时都能胜任。
The past whispers to us through our genes.
Life is made up of sobs, sniffles, and smiles, with sniffles predominating.
I don't do things for the response or the controversy. I just live my life.
Coal miners are the unsung heroes of America's industrial strength.