Objects

Mill John Stuart , 1865 An Examination of Sir William Hamilton's Philosophy and of The Principal Philosophical Questions Discussed in His Writings volume 9 of Collected Works Ed. Robson J M , with an Introduction by Ryan Alan (Toronto: University of Toronto Press/Routledge and Kegan Paul)

Mill John Stuart , 1843 A System of Logic (London: Longmans, Green, Reader, and Dyer)

Popper Karl Sir , 1972 Objective Knowledge (Oxford: Clarendon Press) pp 6–7

Reid Thomas , 1853 Works Ed. Hamilton William Sir (Edinburgh: Maclachlan and Stewart)