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Alan Perlis
30 quotes
“We toast the Lisp programmer who pens his thoughts within nests of parentheses.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“Both knowledge and wisdom extend man's reach. Knowledge led to computers, wisdom to chopsticks.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“There is an appreciated substance to the phrase "ALGOL-like" which is often used in arguments about programming, languages and computation. ALGOL appears to be a durable model, and even flourishes under surgery — be it explorative, plastic, or amputative.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“The vision we have of conversational programming takes in much more than rapid turn around time and convenient debugging aids: our most interesting programs are never wrong and never final. [...] What is new is the requirement to make variable in our languages what we had previously taken as fixed. I do not refer to new data classes now, but to variables whose values are programs or parts of programs, syntax or parts of syntax, and regimes of control.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“This language [LISP] induces humorous arguments among programmers, often being damned and praised for the same feature.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“Programmers should never be satisfied with languages which permit them to program everything, but to program nothing of interest easily.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“Computer science is a restless infant and its progress depends as much on shifts in point of view as on the orderly development of our current concepts.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“1: One man's constant is another man's variable.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“3: Syntactic sugar causes cancer of the semi-colons.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“8: A programming language is low level when its programs require attention to the irrelevant.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“11: If you have a procedure with 10 parameters, you probably missed some.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“16: Every program has (at least) two purposes: the one for which it was written and another for which it wasn't.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“19: A language that doesn't affect the way you think about programming, is not worth knowing.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“31: Simplicity does not precede complexity, but follows it.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“39: A picture is worth 10K words - but only those to describe the picture. Hardly any sets of 10K words can be adequately described with pictures.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“41: Some programming languages manage to absorb change, but withstand progress.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“42: You can measure a programmer's perspective by noting his attitude on the continuing vitality of FORTRAN.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“55: LISP programmers know the value of everything and the cost of nothing.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“57: It is easier to change the specification to fit the program than vice versa.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“58: Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“59: In English every word can be verbed. Would that it were so in our programming languages.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“64: Often it is means that justify ends: Goals advance technique and technique survives even when goal structures crumble.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“75: The computing field is always in need of new cliches: Banality sooths our nerves.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“79: A year spent in artificial intelligence is enough to make one believe in God.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“80: Prolonged contact with the computer turns mathematicians into clerks and vice versa.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“95: Don't have good ideas if you aren't willing to be responsible for them.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“101 Dealing with failure is easy: Work hard to improve. Success is also easy to handle: You've solved the wrong problem. Work hard to improve.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“116: You think you know when you learn, are more sure when you can write, even more when you can teach, but certain when you can program.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“117: It goes against the grain of modern education to teach children to program. What fun is there to making plans, acquiring discipline in organizing thoughts, devoting attention to detail and, learning to be self-critical?”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
“I think that it's extraordinarily important that we in computer science keep fun in computing. When it started out, it was an awful lot of fun. Of course, the paying customers got shafted every now and then, and after a while we began to take their complaints seriously. We began to feel as if we really were responsible for the successful, error-free perfect use of these machines. I don't think we are. I think we're responsible for stretching them, setting them off in new directions, and keeping fun in the house. I hope the field of computer science never loses its sense of fun. Above all, I hope we don't become missionaries. Don't feel as if you're Bible salesmen. The world has too many of those already. What you know about computing other people will learn. Don't feel as if the key to successful computing is only in your hands. What's in your hands, I think and hope, is intelligence: the ability to see the machine as more than when you were first led up to it, that you can make it more.”
Alan Perlis (1922–1990) said by 1990 at the latest wikiquote, CC BY-SA 4.0 source
Recorded in: Quoted in The Structure and Interpretation of Computer Programs by Hal Abelson, Gerald Jay Sussman and Julie Sussman (McGraw-Hill, 2nd edition, 1996).