Widening Quotes (2 quotes)
The future of our civilisation depends upon the widening spread and deepening hold of the scientific habit of mind.
Address to Section L, Education, of the American Association for the Advancement of Science, at Boston (1909). Published in Science (1910), N.S. Vol. 31, No. 787, 127.
Theories are like a stairway; by climbing, science widens its horizon more and more, because theories embody and necessarily include proportionately more facts as they advance.
From An Introduction to the Study of Experimental Medicine (1865), as translated by Henry Copley Greene (1957), 165.

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) --
Carl Sagan
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