Joseph Lister

Joseph Lister in Edin. Med. Journ. 1876, vol. xxii, pp. 280-284) “In investigating nature you will do well to bear ever in mind that in every question there is the truth, whatever our notions may be.  This seems, perhaps, a very simple consideration, yet it is strange how often it seems to be disregarded.  I remember at an early period of my own life showing to a man of high reputation as a teacher some matters which I happened to have observed.  And I was very much struck and grieved to find that, while all the facts lay equally clear before him, those only which squared with his previous theories seemed to affect his organs of vision.”