Ordinary language is all right.
One could divide humanity into two classes:
those who master a metaphor, and those who hold by a formula.
Those with a bent for both are too few, they do not comprise a class.
'The treatment of all these phenomena of mental life is not of importance to me because I am keen on completeness. Rather because each one casts light on the correct treatment of all.'
'The pedigree of psychological concepts: I strive not after exactness, but after a synoptic view.'
'On mathematics: "Your concept is wrong. - However, I cannot illumine the mater by fighting against your words, but only by trying to turn your attention away from certain expressions, illustrations, images, and towards the employment of the words."'
'(The philosopher is not a citizen of any community of ideas. That is what makes him into a philosopher.)'
'In philosophizing we may not terminate a disease of thought. It must run its natural course, and slow cure is all important. (That is why mathematicians are such bad philosophers.)'
'Popeye is still very much alive in oral tradition, but for some reason he chiefly features in verses which are obscene.'
- Iona and Peter Opie, The Lore and Language of Schoolchildren
(The author appears to take his own words to mind: 'The 'Contents' list of any great didactic work, such as the Summa Theologica of St. Thomas Aquinas, the Ethics of Spinoza, or the Ecclesiastical Polity of Hooker, will admirably illustrate this skeleton structure.')