The desire of power in excess caused the angels to fall; the desire of knowledge in excess caused man to fall; but in charity there is no excess, neither can angel or man come in danger by it.

Francis Bacon (1561–1626) English philosopher, scientist, author, statesman

“Of Goodness and Goodness of Nature,” Essays, No. 13 (1625)
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Often trimmed down to "In charity there is no excess."