We think so because all other people think so;
Or because—or because—after all, we do think so;
Or because we were told so, and think we must think so;
Or because we once thought so, and think we still think so;
Or because, having thought so, we think we will think so.

(1838 – 1900) . Lines which came to him in his sleep. Referred to by Dr. William Osler, Harveian Oration, given in the South Place Magazine (Feb., 1907). Quote reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 419-23. Quote reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 419-23.