----My father in one of his best explanatory moods--in eager pursuit of a metaphysical point into the very regions, where clouds and thick darkness would soon have encompassed it about; --my uncle _Toby_ in one of the finest dispositions for it in the world; --his head like a smoak-jack; ----the funnel unswept, and the ideas whirling round and round about in it, all obfuscated and darkened over with fuliginous matter! 
My father in one of his best explanatory moods - in eager pursuit of a metaphysical point into thick darkness; my uncle Toby with his head like a smoke-jack; - the funnel unswept, and the ideas whirling round in it, all darkened with soot! 