Carry Fire in one Hand and Water in the other
(To). To say one thing and mean another; to flatter, to deceive; to lull suspicion in order the better to work mischief.
“Altera manu fert aquam, altera ignem. Altera manu fert lapidem, altera panem ostentat.” Plautus.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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