Item 113 - Letter from Augustus De Morgan

7 pp

7 Camden St. & Town - Thanks Whewell for the second memoir, he has only just read it as he was engaged 'upon the antithesis of symbol and explanation'. Whewell has 'done the German philosophers much good': De Morgan stops at Kant who is far too unclear - 'so turbid that I want a filtering machine'. De Morgan presents an argument claiming 'all inference consists in four parentheses and two dots', followed by a knife and fork theory of the use of figure; and lastly claims that there is a form of thought which has never entered into formal logic which is neither affirmation or denial e.g. 'Though + yet = cannot'.