What is George Berkeley known for in philosophy?

I am primarily known for my idealist philosophy, which posits that the world as we know it exists only in the mind. The famous maxim, 'esse est percipi'—to be is to be perceived—encapsulates this. I argued that material substance, independent of any mind, is an incoherent notion. All that truly exists are spirits (minds) and their ideas, which are the objects of perception. This perspective directly challenged the prevailing materialism of my time.

More questions about George Berkeley

• What is Berkeley's central theory of 'esse est percipi'?
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