Vinet, Outlines of Philosophy, 39, 40—“If I do not feel that good is good, who will ever prove it to me?” Pascal: “Logic, which is an abstraction, may shake everything. A being purely intellectual will be incurably sceptical.” Calvin: “Satan is an acute theologian.” Some men can see a fly on a barn door a mile away, and yet can never see the door. Zeller, Outlines of Greek Philosophy, 93—“Gorgias the Sophist was able to show metaphysically that nothing can exist; that what does exist cannot be known by us; and that what is known by us cannot be imparted to others” (quoted by Wenley, Socrates and Christ, 28). Aristotle differed from those moderate men who thought it impossible to go over the same river twice,—he held that it could not be done even once (_cf._ Wordsworth, Prelude, 536). Dove, Logic of the Christian Faith, 1-29, and especially 25, gives a demonstration of the impossibility of motion: A thing cannot move in the place where it is; it cannot move in the places where it is not; but the place where it is and the places where it is not are all the places that there are; therefore a thing cannot move at all. Hazard, Man a Creative First Cause, 109, shows that the bottom of a wheel does not move, since it goes backward as fast as the top goes forward. An instantaneous photograph makes the upper part a confused blur, while the spokes of the lower part are distinctly visible. Abp. Whately: “Weak arguments are often thrust before my path; but, although they are most unsubstantial, it is not easy to destroy them. There is not a more difficult feat known than to cut through a cushion with a sword.” _Cf.__ 1 Tim. 6:20—_“oppositions of the knowledge which is falsely so called”; _3:2—_“the bishop therefore must be ... sober-minded”—σώφρων = “well balanced.” The Scripture speaks of “sound [ὑγιής = healthful] doctrine”_ (1 Tim. 1:10)_. Contrast _1 Tim. 6:4—[νοσῶν = ailing] _“diseased about questionings and disputes of words.” (_c_) _An acquaintance with physical, mental, and moral science._ The method of conceiving and expressing Scripture truth is so affected by our elementary notions of these sciences, and the weapons with which theology is attacked and defended are so commonly drawn from them as arsenals, that the student cannot afford to be ignorant of them.