(I)The meaning of the word philosophy, “love of wisdom,” the dominant interest of Socrates, the developments of Greek philosophy in Epicureanism and Stoicism, Kant's reliance on the practical reason as a clue to reality—all justify the direction of attention in this essay from the abstract theoretical to the concrete practical aspects of thought. Not that the two can or ought to be separated from, or opposed to one another; for human personality is a unity, and theory and practice must act and react the one on the other. The familiar saying: “More harm is wrought for want of thought than even want of heart,” indicates that in moral activity under-standing of consequences is no less necessary than goodness of intention or motive. The preacher who declared that he was an Agnostic in mind, and a Christian in heart, if he really knew himself and was not deceiving himself with a rhetorical phrase, was in a perilous and unsatisfactory state of mental equilibrium.