"Man's mind is like a store of idolatry and superstition; so much so that if a man believes his own mind it is certain that he will forsake God and forge some idol in his own brain"

John Calvin's quote talks to the human tendency to depend on our own understanding and to turn away from God. He recommends that our minds are filled with idolatry and superstition, and that if we trust our own minds, we will inevitably create idols of our own making. This is a caution against the threats of depending on our own understanding and turning away from God. Calvin is reminding us that our minds are not foolproof and that we should not count on them to guide us. Rather, we must turn to God and trust in His knowledge and guidance. By doing so, we can avoid the risks of idolatry and superstitious notion and rather look for to reside in accordance with God's will.