From William Thompson (Lord Kelvin), 1840:
I had become filled with the utmost admiration for the splendor and poetry of Fourier. … I asked [John Pringle] Nichol if he thought I could read Fourier. He replied ‘perhaps.’ He thought the book a work of most transcendent merit. So on the 1st of May … I took Fourier out of the University Library; and in a fortnight I had mastered it — gone right through it.