"Burns had intellectual breadth and religious susceptibility enough to appropriate what was best in the two phases of the religious thought of his time. Thus it happened that while the average Moderate looked upon Calvinism as represented by the Covenanters as a detestable fanaticism, an enemy to the amenities of social life, Burns paid tribute to their magnificent stand for liberty... Burns, who had Covenanting blood in his veins, had no need to go to Rousseau for his democratic fervour. His "A man's a man for a' that" owes infinitely more to Samuel Rutherford than to Rousseau."