在物理学中，近似的艺术往往比追求精确解更重要。
What we need to do is make batteries safer, more efficient, and more environmentally friendly.
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.
The best way to find yourself is to lose yourself in the service of others.
You don't get another chance, life is no Nintendo game.