Alan Perlis

Systems have sub-systems and sub-systems have sub-systems and so on ad infinitum---which is why we're always starting over.

Alan Perlis

Simplicity does not precede complexity, but follows it.

Alan Perlis

Computers don't introduce order anywhere as much as they expose opportunities.

Alan Perlis

The best book on programming for the layman is Alice in Wonderland; but that's because it's the best book on anything for the layman.

Alan Perlis

The only constructive theory connecting neuroscience and psychology will arise from the study of software.