The form assumed by the strong religious instinct which, notwithstanding all, survived in many natures, was Theism or Deism, as we may please to call it. The latter name may be applied to that mode of thought which simply wiped away the Christian element out of religion, without either seeking or finding any other substitute for the feelings to rest upon. Theism may be considered that definite heightened devotion to the one Supreme Being which the Middle Ages were not acquainted with. This mode of faith does not exclude Christianity, and can either ally itself with the Christian doctrines of sin, redemption, and immortality, or else exist and flour;sh without them.
Sometimes this belief presents itself with childish naivete and even with a half-pagan air, God appearing as the almighty fulfiller of human wishes. Agnolo Pandolfini tells us how, after his wedding, he shut himself in with his wife, and knelt down before the family altar with the picture of the Madonna, and prayed, not to her, but to God, that He would vouchsafe to them the right use of their property, a long life in joy and unity with one another, and many male descendants: 'For myself I prayed for wealth, honour, and friends; for her blamelessness, honesty, and that she might be a good housekeeper.' When the language used has a strong antique flavor, it is not always easy to keep apart the pagan style and the theistic belief.