You never finish a project, you just stop working on it.
When in doubt, use brute force.
Fast, easy, clean - Pick any two.
The most dangerous kinds of people in the world are those that have stopped doubting.
Last-minute panic is by far the most productive emotion.
The simplest solution is usually the best solution.
[insert every single Cave Johnson and mod GladOS quotes]
Religion is regarded by the common as true, by the wise as false, and by the rulers as useful
The best way to know a man's character is to give him power.
Hope is last to disappear.
Those are all I can think of off-hand. There are probably sites overflowing with this kind of thing.