Besides a mathematical inclination, an exceptionally good mastery of one's native tongue is the most vital asset of a competent programmer.

We are all shaped by the tools we use, in particular: the formalisms we use shape our thinking habits, for better or for worse, and that means that we have to be very careful in the choice of what we learn and teach, for unlearning is not really possible.

It is a mistake to think that programmers wares are programs. Programmers have to produce trustworthy solutions and present it in the form of cogent arguments. Programs source code is just the accompanying material to which these arguments are to be applied to.

Testing shows the presence, not the absence of bugs.

The computing scientist's main challenge is not to get confused by the complexities of his own making.

I don't need to waste my time with a computer just because I am a computer scientist.

Mentally mutilated potential programmers beyond hope of regeneration.