When we look forward and try to project what may come out of a development, we are always wrong, because the by-products sometimes become far more important than the primary thing you started out to accomplish. Nevertheless, unintelligent motion is a great deal more important in research than intelligent standing still.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
“250 at Luncheon Honor Kettering,” New York Times (1936-11-11)
(Source)
Quotations by:
Kettering, Charles F.
Logic is an organized way of going wrong with confidence.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
“Kettering’s Law,” from address before American Society of Mechanical Engineers (c. 1944)
Quoted in Heinlein, The Number of the Beast (1980).Alternately quoted:
- "Beware logic. Logic is an organized way to go wrong -- with confidence."
- Logic is an organized way to go wrong with confidence. We should all know by now that a logical course is not always the right one."
Sometimes referred to "Kettering's Observation."
Cited in Food Industries magazine, vol. 16 (1944), referring to the speech being "recent" (the magazine is also referred to as Food Engineering).
This site previously incorrectly attributed the quote to Iris Murdoch. That attribution seems to have been duplicated at some other sites, but was an error. I have also found citations to L. Walter Lundell and Karl Popper.
Another "Kettering's Law" that is referenced is: "Parts left out cost nothing, require no maintenance, and do not fail."
Every great improvement has come after repeated failures. Virtually nothing comes out right the first time. Failures, repeated failures, are finger posts on the road to achievement. One fails forward toward success.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
(Attributed)
(Source)
Keep on going, and chances are you will stumble on something, perhaps when you are least expecting it. I never heard of anyone stumbling on something sitting down.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
(Attributed)
Variant:"Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down."
I am unable to find this precise phrase in Kettering's writings or primary writings about him. However, this appears to have been part of a common set of phrases he used, which indicates either it is accurate or a paraphrase of one of them:Accomplishment has been an accident as a rule. Nobody ever stumbled while he was standing still. You only stumble when you are moving. So we always had it a rule in our organization when we lacked intelligence we speeded up motion, because the chances of stumbling infinitely increased.
"250 at Luncheon Honor Kettering," New York Times (1936-11-11)Nobody ever found anything while sitting down. So, Q.E.D., don't be afraid to stumble.
“Don’t Be Afraid to Stumble,” The Rotarian (1952-01)
Whenever you look at a piece of work and you think the fellow was crazy, then you want to pay some attention to that. One of you is likely to be, and you had better find out which one it is. It makes an awful lot of difference.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
Comment (1930)
(Source)
As attributed by Francis Davis, inventor of power steering.
[T]he more education a man has, the less likely he is to invent new things. Possibly this is because from the moment the boy or girl starts in school he or she is examined three or four times a year and a failure or two and he or she is out. Now because an inventor works differently, he thinks that’s all wrong. He knows he’ll never go far on any problem before he strikes snags. He may flunk 999 times but if on his 1,000th try he succeeds, he wins! The only time you don’t want to fail is the last time you try a thing.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
Essay (1952-01), “Don’t Be Afraid to Stumble,” The Rotarian, Vol. 80, No. 1
(Source)
Kettering, who was R&D Director at General Motors for many years, constantly emphasized the need for experimentation and, by definition, learning from experimental failures. He had a number of aphorisms and passages that were repeated by him on various speaking occasions, or quoted / paraphrased from him by others, particularly the last line above.
In T. A. Boyd's biography of Kettering, Professional Amateur, Part 3, ch. 20 (1957), we have:It therefore seems that the only factor which needs to be corrected is to teach a highly educated person that it is not a disgrace to fail and he must analyze every failure to find its cause. We paraphrase this by saying, "You must learn how to fail intelligently." [...] For failing is one of the greatest arts in the world. [...] Once you've failed, analyze the problem and find out why, because each failure is one more step leading up to the cathedral of success. The only time you don't want to fail is the last time you try.
Here is this similar passage attributed to Kettering from a page blurb, "Don't Be Afraid to Stumble," Supervisory Management magazine, Vol. 2, No. 7 (1957-06):We need to teach the intelligent person that it is not a disgrace to fail and that he must analyze every failure to find its cause. He must learn how to fail intelligently, for failing is one of the greatest arts in the world. Once you've failed, analyze the problem and find out why, because each failure is one more step leading to success. The only time you don't want to fail is the last time you try.
The shorter the phrase, the more likely it is to be quoted on its own, e.g.:The only time you don't want to fail is the last time you try.
Which can be found in:Other variants that can be found:
- T. A. Boyd, Research, ch. 22 "Persistance" (1935).
- Society of Automotive Engineers (SAE) Journal, Vol 42, No. 2 (1938-02), covering the Detroit SAE Annual Meeting (1938-01-10 to 14).
- "The only time you mustn't fail is the last time you try."
- "The only time you can't afford to fail is the last time you try."
- "The only time you don't fail is the last time you try something, and it works."
It therefore seems that the only factor which needs to be corrected is to teach a highly educated person that it is not a disgrace to fail and he must analyze every failure to find its cause. We paraphrase this by saying, “You must learn how to fail intelligently.” […] For failing is one of the greatest arts in the world. […] Once you’ve failed, analyze the problem and find out why, because each failure is one more step leading up to the cathedral of success. The only time you don’t want to fail is the last time you try.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
Quoted in T. A. Boyd, Professional Amateur: The Biography of Charles Franklin Kettering, Part 3, ch. 20 (1957)
(Source)
Kettering constantly emphasized the need for experimentation and, by definition, learning from experimental failures. He had a number of aphorisms and passages that were repeated by him on various speaking occasions, or quoted / paraphrased from him by others.
For example, there is this similar passage attributed to Kettering from a page blurb, "Don't Be Afraid to Stumble," Supervisory Management magazine, Vol. 2, No. 7 (1957-06):We need to teach the intelligent person that it is not a disgrace to fail and that he must analyze every failure to find its cause. He must learn how to fail intelligently, for failing is one of the greatest arts in the world. Once you've failed, analyze the problem and find out why, because each failure is one more step leading to success. The only time you don't want to fail is the last time you try.
The shorter the piece, the more likely it is to be quoted on its own, e.g.:The only time you don't want to fail is the last time you try.
Which can be found in:
- T. A. Boyd, Research, ch. 22 "Persistance" (1935).
- Society of Automotive Engineers (SAE) Journal, Vol 42, No. 2 (1938-02), covering the Detroit SAE Annual Meeting (1938-01-10 to 14).
This problem, when solved, will be simple.
Charles F. Kettering (1876-1958) American inventor, engineer, researcher, businessman
Sign at the General Motors research laboratories
(Source)
Quoted by Kettering in "Don't Be Afraid to Stumble," The Rotarian (Jan 1952)



