ἀνθέλκειν
From LSJ
μεγάλα ὠφελήσεσθε πρὸς ἱστορίαν τῶν κοινῶν → that will be of great benefit to you in order to understand public affairs
Greek > English (Woodhouse Verbs Reversed)
(see also ἀνθέλκω): drag in an opposite direction, pull in an opposite direction
Lexicon Thucydideum
retrahere, to hold back, check, 4.14.2.