The main theoretical work of the Anglo-Irish immaterialist philosopher George Berkeley (1685-1753).

“When I deny the existence of sensible things outside the mind, I do not mean my mind in particular, but all minds. It is clear that these things have an existence external to my spirit, since I find them in experience independent of it. Therefore there is some other Spirit in which they exist in the intervals between the moments of my perception of them. they existed before my birth and will exist after my supposed disappearance from the face of the earth. And since the same is true of all other finite created spirits, it necessarily follows that there is an omnipresent eternal Spirit who knows and comprehends all things. and who shows them to our sight in such a way and in accordance with such rules as He himself has established and which we define as the laws of nature." George Berkeley