Richard Hamming

Mathematicians stand on each others’ shoulders and computer scientists stand on each others’ toes.

The purpose of computing is insight, not numbers.

Typing is no substitute for thinking.

Perhaps the central problem we face in all of computer science is how we are to get to the situation where we build on top of the work of others rather than redoing so much of it in a trivially different way.

Any unwillingness to learn mathematics today can greatly restrict your possibilities tomorrow.

In science if you know what you are doing you should not be doing it. In engineering if you do not know what you are doing you should not be doing it.

I always spend a day a week learning new stuff. That means I spend 20% more of my time than my colleagues learning new stuff. Now 20% at compound interest means that after four and a half years I will know twice as much as them.