Montague Rhodes James,
Dictionary of National Biography…
(1912)
“ During these years Clark was one of the best-known personalities in Cambridge, alike in his private and in his public capacity. In university politics he was a liberal, and a fiery supporter of every cause which he took up. His quickness of temper and freedom of expression involved him in many somewhat acute personal controversies; but the geniality which was his leading characteristic seldom allowed a quarrel to develop into an enmity. No university institution benefited more largely by his efforts than the library. ”
