我不是天才。我只是努力工作，永不放弃。
失败是有趣的——它是进步的一部分。你从成功中学不到什么，但从失败中可以学到很多。
The most valuable resource in any company is its people.
Efficiency is doing things right; effectiveness is doing the right things.
Mathematics is the language with which God has written the universe.
Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.