"Copernican revolution"

In this context, the Copernican revolution is Kant shifting the human away from the centre, in the same way that Copernicus shifted the Earth from its former position at the centre of the universe with the sun revolving around it. The previous revolution is known as the Cartesian revolution, after Descartes' famous Cogito ergo sum ('I think therefore I am') placed the human mind and experience at the centre of philosophical inquiry.