Henry Ward Beecher,
Popular Science Monthly
(1872)
“ The surgeon must know his tools and how to handle them, but he must know, too, the system on which he is going to use them. And shall a man, charged with the care of the soul, sharpen up his understanding with moral distinctions and learned arguments, and know all about the theories of theology, from Adam down to our day, and yet know nothing of the organism upon which all these instrumentalities are to be used? Shall he know nothing about man himself? The student who goes out to his work with a wide knowledge of theology, and no knowledge of human nature, is not half fitted for his duty. ”
