Putrefy Quotes (1 quote)
Just as iron rusts from disuse and stagnant water putrefies, or when cold turns to ice, so our intellect wastes unless it is kept in use.
C.A. 289 v. c. In Irma A. Richter and Thereza Wells (eds.), Leonardo da Vinci: Notebooks (1952, 1980), 245. Also translated as “Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigour of the mind,” in Edward McCurdy, The Notebooks of Leonardo Da Vinci (1939), Vol. 1, 89. Translated as “Just as iron rusts unless it is used, and water putrifies or, in cold, turns to ice, so our intellect spoils unless it is kept in use,” in Jean Paul Richter (trans.), The Notebooks of Leonardo Da Vinci (1888), Note 1177.
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) -- 
