The title character in henry wadsworth longfellow's "the village blacksmith" is physically strong and extremely hard-working, but he is also

superstitious and plagued fears and worries

unwilling to accept from his friends and neighbors

capable of great silliness and frivolity

capable of great sensitivity and tenderness

I think the answer is the last phrase "capable of great sensitivity and tenderness"

In the sixth stanza of the poem, his sensitive and tender side was shone. He had lost his wife but he continues to remember her memory. He took care of their children. He was able to take the role of the mother and a father at the same time.