Every friend whom not thy fantastic will but the great and tender heart in thee craveth, shall lock thee in his embrace. And this because the heart in thee is the heart of all; not a valve, not a wall, not an intersection is there anywhere in nature, but one blood rolls uninterruptedly in endless circulation through all men, as the water of the globe is all one sea, and, truly seen, its tide is one.

Essays [1st ser., ed.] with preface by T. Carlyle (ed. 1841)