When someone makes a decision, he is really diving into a strong current that will carry him to places he had never dreamed of when he first made the decision.
The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.
A picture must be a thing in itself, not a representation of something else.
The heart of the educator must be a living flame, a fire that can ignite the souls of the young.
来吧，我的朋友，寻找更新的世界尚为时不晚，我决心已定，要驶过夕阳尽头，尽管我们不再有昔日的伟力，可以震天撼地，我们仍有着，同样的英雄的心，时间和命运使它衰老，但坚强意志仍在，让我们去奋斗，去探索，去发现，永不屈服。
在量子力学中，观察者与被观察的系统并不是分离的。
黄金法则就是没有黄金法则。