We are what we repeatedly do. Excellence, then, is not an act but a habit.

You cannot swim for new horizons until you have courage to lose sight of the shore.

"A book is a gift you can open again and again."

过去从未死去，它甚至还未过去。

我本无才又多病，身体衰弱，没想到虚名却传到了皇帝耳中。

The environment will appear different to different observers depending on what they are prepared to see.

The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.