Conscience is a safe guide; but it is not an infallible guide, and it is our duty to perfect it day by day by seeking more truth and obeying it. Our instincts or feelings are safe guides within certain limitations; but they are not perfect guides, and it is our duty to strengthen, guide and restrain them with the knowledge and help that other faculties can supply. The Intellect. Let us now see what light we can get concerning the intellect. What are its functions and limitations? Is it safe as a guide? According to the phrenological classification, the intellectual faculties are divided into three classes; viz.: the perceptive, literary and reasoning faculties. The perceptive faculties bring us into relationship with the external world, and through them we learn about the color, size, form, weight, etc., of material objects. If the phrenologists are right, then neither those who claim that the mind is like a blank sheet and knows nothing but what it gets from without, nor those who ascribe almost everything to innate, intuitive ideas, are wholly correct. As usual, the truth lies midway between the two extremes. The mind has innate, intuitive powers of perception, selection and discrimination without which material objects, events and thoughts could make no more impression upon us than upon a fence-rail. But these innate powers are subject to improvement by heredity and culture and their dictates must be carefully watched and corrected by other faculties, as they are fallible and most of them subject to perversion and delusion. As the conscience and sentiments although not infallible, are our only guides in their sphere; so our perceptive faculties are good and safe, but not perfect, guides. These perceptive faculties, in a measure, help and correct each other's impressions; and through optical illusions, expectant attention, dreams, etc., we learn that their dictates must be carefully watched and verified. The latest voice of science is that all the sensation produced by physical stimulants can also be produced by the imagination; so that people can feel cold, heat, pain, etc., when there is no physical cause for them. These things should not make us skeptical about our perceptive powers, but rather cautiously critical.