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Joseph Liouville
(24 Mar 1809 - 8 Sep 1882)
French mathematician.
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Quotes by others about Joseph Liouville (1)
Once when lecturing to a class he [Lord Kelvin] used the word “mathematician,” and then interrupting himself asked his class: “Do you know what a mathematician is?” Stepping to the blackboard he wrote upon it:— [an integral expression equal to the square root of pi]
Then putting his finger on what he had written, he turned to his class and said: “A mathematician is one to whom that is as obvious as that twice two makes four is to you. Liouville was a mathematician.”
Then putting his finger on what he had written, he turned to his class and said: “A mathematician is one to whom that is as obvious as that twice two makes four is to you. Liouville was a mathematician.”
In Life of Lord Kelvin (1910), 1139.
See also:
- 24 Mar - short biography, births, deaths and events on date of Liouville's birth.
- Joseph Liouville 1809-1882: Master of Pure and Applied Mathematics, by Jesper Lützen. - book suggestion.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- 
