For until men recognize that they owe everything to God, that they are nourished by His fatherly care, that He is the Author of their every good, that they should seek nothing beyond Him - they will never yield Him willing service. Nay, unless they establish their complete happiness in Him, they will never give themselves truly and sincerely to Him.
John CalvinLet it stand, therefore, as an indubitable truth, which no engines can shake, that the mind of man is so entirely alienated from the righteousness of God that he cannot conceive, desire, or design any thing but what is wicked, distorted, foul, impure, and iniquitous; that his heart is so thoroughly envenomed by sin that it can breathe out nothing but corruption and rottenness; that if some men occasionally make a show of goodness, their mind is ever interwoven with hypocrisy and deceit, their soul inwardly bound with the fetters of wickedness.
John Calvin