ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
sillybus: i, m., = σίλλυβον>,
I a kind of thistle, Plin. 22, 22, 42, § 85; 26, 7, 25, § 40 (but the true reading, Cic. Att. 4, 5, 3; 4, 8, a, 2, is sittybus, q. v.).