In 1892 I was asked by the Harvard Corporation to give a
few public lectures on psychology to the Cambridge
teachers. The talks now printed form the substance of that
course, which has since then been delivered at various
places to various teacher-audiences. I have found by
experience that what my hearers seem least to relish is
analytical technicality, and what they most care for is
concrete practical application. So I have gradually weeded
out the former ...