" Man as we realize if we reflect for a moment, never perceives anything fully or comprehends anything completely. He can see, hear, touch, and taste; but how far he sees, how well he hears, what his touch tells him, and what he tastes depend upon the number and quality of his senses. These limit his perception of the world around him. By using scientific instruments he can partly compensate for the deficiencies of his senses. For example, he can extend the range of his vision by binoculars or of his hearing by electrical amplification. But the most elaborate apparatus cannot do more than bring distant or small objects within range of his eyes, or make faint sounds more audible. No matter what instruments he uses, at some point he reaches the edge of certainty beyond which conscious knowledge cannot pass. "

― C.G. Jung , Man and His Symbols