The pure philosophical works

abstract ideas absurd Alciphron angles answer apparent magnitude appear Aristotle Arthur Collier Atheism believe Berkeley Berkeley's bodies cause ceived colour common conceive conscious consider corporeal substance demonstrated deny Dialogue Dioptrics distance distinct doctrine doth effect Essay evident experience external faculty farther figure finite follows geometry hath Human Knowledge ideas of sight imagination immediate objects immediately perceived infer infinitely divisible J. S. Mill Julius Cæsar language Malebranche manner material substance meaning metaphysical mind motion nature objects of sight observed opinion Optics pain perceived by sense perceived by sight perception percipient phenomena Phil philosophers plain Principles of Human reason relation retina Scepticism sect seems sensations sense-ideas sensible qualities sensible things shew shewn sight and touch signified signs spirit substratum suggest suppose term Theory of Vision thought tion Treatise triangle true truth understanding unperceived unthinking visible objects Vision Vindicated visual wherein whereof words