过去总是紧张的，未来是完美的。
The goal of software engineering is to control complexity, not to create it.
The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.
数学的力量在于它的抽象性，使我们能够看到不立即显现的模式和联系。
Errors, like straws, upon the surface flow; he who would search for pearls must dive below.