Dear Reader: I wonder if you may not sometimes have felt inclined to doubt a little the correctness of the… — Søren Kierkegaard

Dear Reader: I wonder if you may not sometimes have felt inclined to doubt a little the correctness of the familiar philosophic maxim that the external is the internal and the internal the external. … For my part I have always been heretically-minded on this point in philosophy, and have therefore early accustomed myself, as far as possible, to institute observations and inquiries concerning it. I have sought guidance from those authors whose views I shared on this matter; in short, I have done everything in my power to remedy the deficiency in the philosophical works. Gradually the sense of hearing came to be my favorite sense; for just as the voice is the revelation of the inwardness incommensurable with the outer, so the ear is the instrument by which this inwardness is apprehended, hearing found a contradiction between what I saw and what I heard, then I found my doubt confirmed, and my enthusiasm for the investigation stimulated.”

p. 3Source: Wikiquote · CC BY-SA 4.0