The only way to learn a new programming language is by writing programs in it.

Some consider UNIX to be the second most important invention to come out of AT&T Bell Labs after the transistor.

UNIX is simple and coherent, but it takes a genius (or at any rate, a programmer) to understand and appreciate its simplicity.

At least for the people who send me mail about a new language that they're designing, the general advice is: do it to learn about how to write a compiler

I've done a reasonable amount of travelling, which I enjoyed, but not for too long at a time.

Unix has retarded OS research by 10 years and linux has retarded it by 20.

... with proper design, the features come cheaply. This approach is arduous, but continues to succeed.