The best books are those that open your eyes.

If you can't fly then run， if you can't run then walk， if you can't walk then crawl， but whatever you do you have to keep moving forward.

The only way to deal with the past is to confront it.

The power of a computational model is not just in its ability to compute, but in its ability to generalize from specific instances.

Education is the most powerful weapon which you can use to change the world.