Date: 1818, 1859

"Now this is by no means possible, for as soon as we turn into ourselves to make the attempt, and seek for once to know ourselves fully by means of introspective reflection, we are lost in a bottomless void; we find ourselves like the hollow glass globe, from out of which a voice speaks whose cau...

— Schopenhauer, Arthur (1788-1860)

Date: December 27, 1823

"Now in filling my mind with them [ideas and facts], and in warming and animating me, you would, I doubt not, do me great good. And I am one of those substances, like sealing wax and other electric bodies, which require to be warmed in order to possess the faculty of attracting objects, of coveri...

— Wilberforce, William (1759-1833)