The saddest thing about love is that not only that it cannot last forever, but that heartbreak is soon forgotten.

Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning.

The best is yet to be, the last of life, for which the first was made.

数学是理性的音乐。

"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."

预测未来的最好方法就是创造未来。