(Read Part 8 of the series.)

A Return to Scepticism

The Scottish philosopher David Hume accepted Locke’s empiricism and also agreed with Berkeley that we cannot ever know that there is a world outside of and separate from ourselves. Indeed he claimed not to understand what people meant by the idea of ‘substance’. We only know about perceptions, colour, sound, taste and so on. If this thing called ‘substance’ is something else, we have no knowledge of it – why invent it? If we took away the sensible qualities of things there would be nothing left, would there? Why should we need anything to explain or support our perceptions and impressions? Questions about why they arise are unnecessary and the answers suggested to explain them are unintelligible. The idea of ‘mind’ is just as illogical. If we simply dropped both of them, we would have no need to try to imagine ways in which such supposedly different ‘things’ might interact, as Descartes had wasted so much of his time doing.

He was also sceptical of Descartes’ conviction of his own existence as a thinking individual and made his own attempts to find some irreducible ‘self’ of which he could be certain. He decided that, whenever he attempted to look for ‘himself’ he could only find thoughts, feelings and perceptions; never a ‘self’ that is the perceiver, feeler and thinker. And so he concluded that there was no such thing. One feels one wants to get hold of him and shake him and say: “Yes, when you look, all that you find are thoughts, feelings and perceptions but who is it who finds this? What is the ‘who’ that is doing the looking?” He also felt similarly about God. We may well feel convinced that there is a God – this is effectively the definition of faith, a firm conviction without any empirical evidence – but this is not the same as knowledge. Continue reading →