"I have discovered that there are two types of command interfaces in the world of computing: good interfaces and user interfaces."

"From a security perspective, if you're connected, you're screwed."

"I thank God for not making me a computer scientist."

"The most important function of a bibliographic entry is to help the reader obtain a copy of the cited work."

"I do engineering, not religion."

"In general, the Internet was not designed to accommodate deliberate failures to communicate."

"I won't be satisfied until I've put the entire security industry out of work."