εἰκαστέον
From LSJ
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
English (LSJ)
A one must liken, compare, τί τινι Plu.2.374a, Max.Tyr.33.6.
Spanish (DGE)
1 hay que figurar o representar artísticamente τῶν ... μαχομένων ἀπειλητικὰ τὰ ὄμματα εἰ. var. en Stob.4.18.11 de ἀπεικαστέον en X.Mem.3.10.8.
2 hay que comparar Plu.2.374a, ὀχλοκρατίᾳ τινὶ εἰ. τὴν τῆς ψυχῆς πονηρίαν Max.Tyr.27.6.