George Berkeley (1685-1753) û an Anglo-Irish philosopher whose primary achievement was the advancement of a theory he called “immaterialism.” This theory contends that ideas are dependent upon being perceived by minds for their very existence, a belief that became immortalized in the dictum, “to be is to be perceived.”.

Originally released by First American Media Group, Inc., 2012. Streaming video file encoded with permission for digital streaming by Infobase on September 13, 2016.

George Berkeley: Famous Philosophers (6:59); .