The price of reliability is the pursuit of the utmost simplicity. It is a price which the very rich may find hard to pay.

In the development of the understanding of complex phenomena, the most powerful tool available to the human intellect is abstraction. Abstraction arises from the recognition of similarities between certain objects, situations, or processes in the real world and the decision to concentrate on these similarities and to ignore, for the time being, their differences.

Some problems are better evaded than solved.

I was eventually persuaded of the need to design programming notations so as to maximize the number of errors which cannot be made, or if made, can be reliably detected at compile time.

The price of reliability is the pursuit of the utmost simplicity. It is a price which the very rich may find hard to pay.

Here is a language so far ahead of its time, that it was not only an improvement on its predecessors, but also on nearly all its successors.

The job of formal methods is to elucidate the assumptions upon which formal correctness depends.