In his Conway Memorial Lecture in 1922, Bertrand Russell used the example of Albert Einstein to explain the meaning of scientific temper:We have had in recent years a brilliant example of the scientific temper of mind in the theory of relativity and its reception by the world. Einstein, a German-Swiss-Jew pacifist, was appointed to a research professorship by the German Government in the early days of the War; his predictions were verified by an English expedition which observed the eclipse of 1919, very soon after the Armistice. His theory upsets the whole theoretical framework of traditional physics; it is almost as damaging to orthodox dynamics as Darwin was to "Genesis". Yet physicists everywhere have shown complete readiness to accept his theory as soon as it appeared that the evidence was in its favour. But none of them, least of all Einstein himself, would claim that he has said the last word. He has not built a monument of infallible dogma to stand for all time. There are difficulties he cannot solve; his doctrines will have to be modified in their turn as they have modified Newton’s. This critical undogmatic receptiveness is the true attitude of science.Beginning in 1946, Jawaharlal Nehru, the first Prime Minister of independent India, popularized the use of the phrase "scientific temper" to further propagate the notion. He gave a descriptive explanation in "The Discovery of India":The scientific temper points out the way along which man should travel. It is the temper of a free man. We live in a scientific age, so we are told, but there is little evidence of this temper in the people anywhere or even their leaders.