It was a large prison with many courts and passages so like one another and so uniformly paved that I seemed to gain a new comprehension, as I passed along, of the fondness that solitary prisoners, shut up among the same staring walls from year to year, have had--as I have read--for a weed or a stray blade of grass. 
It was a large prison with many identical courts and passages, and with no weed or blade of grass. 