his rugged, powerful, massive, middle-sized figure and strong, sensitive face made him seem an exemplar of what the highlands could produce, but his heart had warmed for half a century or more, to the cold granite of aberdeen, and he included a vast humanity in his acquired nature.

This is all lower case. Can you fix that?
His rugged, powerful, massive, middle-sized figure and strong, sensitive face made him seem an exemplar of what the Highlands could produce, but his heart had warmed for half a century or more, to the cold granite of Aberdeen, and he included a vast humanity in his acquired nature.