Hypotheses, like professors, when they are seen not to work any longer in the laboratory, should disappear.
Henry Edward Armstrong (1848 - 1937)
![](https://www.causeweb.org/cause/sites/default/files/styles/large/public/resources/fun/authors/Henry_Armstrong.jpg?itok=FF8eEA4D)
Hypotheses, like professors, when they are seen not to work any longer in the laboratory, should disappear.
Henry Edward Armstrong (1848 - 1937)