Clarity

In very general questions […] the difficulty often lies with the unclarity of a question and not with the impossibility of an answer: once again, to have a clear answer we must first have a clear question.

John Hospers, An introduction to philosophical analysis, Upper Saddle River, N.J, 1953, p. 13

my Lord Chancellor did say, though he was in other things in an ill humour, that no man in England was of more method nor made himself better understood then myself.

Samuel Pepys, Diary of Samuel Pepys, 1669