Computer science is not about machines, in the same way that astronomy is not about telescopes. There is an essential unity of mathematics and computer science
Folklore, multiple attribution
I don’t need to waste my time with a computer just because I am a computer scientist
Plagiarism is the sincerest form of flattery.
The most important property of a program is whether it accomplishes the intention of its user.
Sir Tony Hoare
What one programmer can do in one month, two programmers can do in two months.
It is possible to invent a single machine which can be used to compute any computable sequence.
Perhaps the most important principle for the good algorithm designer is to refuse to be content.