Saint Anselm

“ Much more, therefore, do we owe all thanks to God for completing his intended favor to man; though, indeed, it would not be proper for him to fail in his good design, because wanting nothing in himself he begun it for our sake and not his own. For what man was about to do was not hidden from God at his creation; and yet by freely creating man, God as it were bound himself to complete the good which he had begun. In fine, God does nothing by necessity, since he is not compelled or restrained in anything. ”

“ And when we say that God does anything to avoid dishonor, which he certainly does not fear, we must mean that God does this from the necessity of maintaining his honor; which necessity is after all no more than this, viz., the immutability of his honor, which belongs to him in himself, and is not derived from another; and therefore it is not properly called necessity. Yet we may say, although the whole work which God does for man is of grace, that it is necessary for God, on account of his unchangeable goodness, to complete the work which he has begun. ”

“ There is a necessity which takes away or lessens our gratitude to a benefactor, and there is also a necessity by which the favor deserves still greater thanks. For when one does a benefit from a necessity to which he is unwillingly subjected, less thanks are due him, or none at all. But when he freely places himself under the necessity of benefiting another, and sustains that necessity without reluctance, then he certainly deserves greater thanks for the favor. ”