A dictionary of Proverbs (Oxford Paperback Reference)

CAESAR’s wife must be above suspicion
Julius Caesar replied thus (according to Plutarch) when asked why he had divorced his wife Pompeia. He considered his honour and position compromised, since she was indirectly associated with Publius Clodius’ trial for sacrilege. Cf. 1580 LYLY Euphues & his England II. 101 Al women shal be as Caesar would haue his wife, not onelye free from sinne, but from suspition.

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  1779 A. ADAMS Letter 4 Jan. in L. H. Butterfield et al. Adams Family Correspondence (1973) III. 148 It is a very great misfortune that persons imployed in the most important Departments should.. have seperate interests from the publick whom they profess to serve. Caesars wife ought not to be suspected. 1847 J. C. & A. W. HARE Guesses at Truth (ed. 3) 1st Ser. 263 Caesar’s wife ought to be above suspicion...Caesar himself ought to be so too. 1965 O. MILLS Dusty Death xxi. Policemen.. are like. ..candidates for the Church of England ministry. .. and Caesar’s wife. .. Not only they, but all their relations, must be above suspicion. 1990 Washington Times 9 July D2 He [i.e. Governor D. Wilder] ought to bear in mind the maxim of one of Caligula’s more lucid predecessors: Caesar’s wife must be above suspicion. And so should Caesar. ■ associates; conduct
  

cake see you cannot HAVE your cake and eat it.
calf see a BELLOWING cow soon forgets her calf.
call see call no man HAPPY till he dies; he who PAYS the piper calls the tune.
called see MANY are called but few are chosen.
calm see AFTER a storm comes a calm.
camel see it is the LAST straw that breaks the camel’s back; TRUST in God but tie your camel.
He who CAN, does; he who cannot, teaches
There are many (frequently humorous) variations on this proverb.

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