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.
Kant begins the B version of the first Critique by using someone else's words to ask that his own words be considered 'not an opinion, but a work', quoting Francis Bacon to say de nobis ipsis silemus—about myself I am silent.
Is there a better expression of philosophy's wish for purity?