I echo that sentiment but oppose the positive adjectives tied to his motivation. Rather I believe can be at our best when motivated by our dark emotions towards positive actions: Grief, rage, madness.

Mr. Manjhi was compelled to this momentous thing after his world was torn apart by it. He persevered while the very people whose lives and whose children's lives he was improving mocked him. He worked for 20 years compelled by his demons and the universe is better off for it. I hope destroying the mountain gave him peace.