“If the doors of perception were cleansed every thing would appear to man as it is, Infinite. For man has closed himself up, till he sees all things thro' narrow chinks of his cavern.”— William Blake（ The Marriage of Heaven and Hell）

Long before Plato, philosophers recognized the importance of the senses and attempted to explain how humans come to know and understand the world through their senses. The ancient Greek philosopher Aristotle believed that the senses shape our understanding of the world and also affirm our existence. However, at a time when information technology is advancing at a furious pace and electronic devices have become an important medium for humans to perceive the world, the physicality of the body is dissolving and the boundaries of the senses are gradually blurring. As William Blake said, humans who block the gates of their senses are trapped in a corner of their own constructed cave, unable to glimpse the vast expanse of the world. German artists Daniel Richter and Matthias Franz lead the senses into an artistic dialog with their works, focusing on every nuance of visual and auditory experience, and re-experiencing the wonderful wonders of self and the world.