λογίζεσθαι
From LSJ
κεραυνὸν ἐν γλώττῃ φέρειν → carry a thunderbolt on his tongue
Greek > English (Woodhouse Verbs Reversed)
(see also λογίζομαι): calculate, number, ponder, reckon, reflect, add up, brood on, contemplate mentally, cudgel one's brains, meditate on, ponder on, rack one's brains, reflect on, reflect upon, take into consideration, think of, wrack one's brains