Robert Boyle (1664). “Some Considerations Touching the Usefulnesse of Experimental Naturall Philosophy, ... by the Honorable Robert Boyle Esq; ...”, p.37
Philosophies (1910) "In Exile" pt. 7 (describing his part in discovering the life-cycle of the malaria parasite in 1897; cf. Oxford Dictionary of Quotations (1979) 77:1)