Coleridge on Sir Thomas Browne:
…he is a quiet and sublime Enthusiast with a strong tinge of the Fantast, the Humorist constantly mingling with & flashing across the Philosopher, as the darting colours in shot silk play upon the main dye. In short, he has brains in his Head, which is all the more interesting for a little Twist in the Brains.
Samuel Taylor Coleridge, “Letter on Browne,” March 10, 1804
I found this in Sir Thomas Browne: The Major Works, C.A. Patrides (Editor). You can find the full letter on Wikisource.