Super Short Summary

In A Treatise Concerning the Principles of Human Knowledge, George Berkeley presents his philosophy of immaterialism, asserting that nothing exists outside of a mind's perception. He critiques contemporary empiricists like John Locke and David Hume, arguing that abstract thought and belief in independent matter lead to philosophical confusion. Berkeley claims that reality consists of ideas perceived by minds, primarily God's mind, and thus objects do not exist without perception. He aims to counter skepticism and atheism, reinforcing the presence and order of a creator spirit, God, and aligns his viewpoints with common sense, science, and Christianity.