But because you will object, that, alas, few even of the upright, have wits so strong as to be fit for this, I add, that he that will walk uprightly, must in the great essential parts of religion have this foresaid knowledge of his own, and in the rest at least he must have the conduct of the wise. And therefore,
1. He must be wise in the great matters of his salvation, though he be weak in other things.
2. And he must labour to be truly acquainted who are indeed wise men, that are meet to be his guides: and he must have recourse to such in cases of conscience, as a sick man to his physician. It is a great mercy to be so far wise, as to know a wise man from a fool, and a counsellor from a deceiver.
Richard Baxter, William Orme, The Practical Works of the Rev. Richard Baxter, vol. 6 (London: James Duncan, 1830), 8.
An itinerant medicine vendor sitting on a donkey with his boxes of medicines, a monkey sits on his shoulder and a fool blows a trumpet at them. Watercolour by M. Calisch, http://wellcomeimages.org/indexplus/obf_images/48/c3/2e64da72d195f1c814e26afaa779.jpgGallery: http://wellcomeimages.org/indexplus/image/V0016230.html, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=36501758