Men would often see what a small pittance of reason and truth, or possibly none at all, is mixed with those huffing opinions they are swelled with
 John Locke, An Essay Concerning Human Understanding (1689). copy citation

Context

“And I shall be pardoned if I have dwelt long on an argument which I think, therefore, needs to be inculcated, because the faults men are usually guilty of in this kind, are not only the greatest hindrances of true knowledge, but are so well thought of as to pass for it. Men would often see what a small pittance of reason and truth, or possibly none at all, is mixed with those huffing opinions they are swelled with; if they would but look beyond fashionable sounds, and observe what IDEAS are or are not comprehended under those words with which they are so armed at all points, and with which they so confidently lay about them.” source