Charles Babbage Quote
If we define a miracle as an effect of which the cause is unknown to us, then we make our ignorance the source of miracles! and the universe itself would be a standing miracle. A miracle might be perhaps defined more exactly as an effect which is not the consequence or effect of any known laws of nature.
"Passages from the life of a philosopher", Appendix, p. 489 - Passages from the Life of a Philosopher (1864)