But they say again, that though the principles be right, yet common people are not of capacity enough to be made to understand them. I should be glad that the rich and potent subjects of a kingdom, or those that are accounted the most learned, were no less incapable than they. But all men know that the obstructions to this kind of doctrine proceed, not so much from the difficulty of the matter as from the interest of them that are to learn. Potent men digest hardly anything that setteth up a power to bridle their affections; and learned men anything that discovereth their errors, and thereby lesseneth their authority: whereas the common people’s minds, unless they be tainted with dependence on the potent, or scribbled over with the opinions of their doctors, are like clean paper, fit to receive whatsoever by public authority shall be imprinted in them.