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• A good workman is known by his tools.
• It is a poor workman who blames his tools.
• It's a poor workman who blames his tools.
• To one commending an orator for his skill in amplifying petty matters, Agesilaus said, "I do not think that shoemaker a good workman that makes a great shoe for a little foot.
  -- Plutarch (46-120 AD) -- Laconic Apophthegms, Of Agesilaus the Grea...
• A bad workman always blames his fools. -- 7th Docto
• Hardly a competent workman can be found who does not devote a considerable amount of time to studying just how slowly he can work and still convince his employer that he is going at a good pace.
  -- Frederick W. Taylo...