The revolutionary simpleton is everywhere.Jose Lezama Lima: 1927 Time and Western Man, pt.1, ch.6.
If you're hell-bent on making your bank look and sound like a simpleton, a desk labelled Travel Money is still a bit too formal. Why not call it Oooh! Look at the Funny Foreign Banknotes instead? And accompany it with a doodle of a French onion-seller riding a bike, with a little black beret on his head and a baguette up his arse and a speech bubble saying, "Zut Alors! Here is where you gettez les Francs!"charlie brooker: The Guardian, 6 November 2006, The banks are coming over all chummy. It's nauseating 
The most difficult character in comedy is that of the fool , and he must be no simpleton that plays the part.Miguel de Cervantes, as quoted in The Two Hands of God: The Myths of Polarity (1969) by Alan Watts
What does an instinctively popular poet do in contemporary America, where serious poetry is no longer a popular art? The public whose values and sensibility he celebrates is unaware of his existence. Indeed, even if they were aware of his poetry, they would feel no need to approach it. Cut off from his proper audience, this poet feels little sympathy with the specialized minority readership that now sustains poetry either as a highly sophisticated verbal game or secular religion. His sensibility shows little similarity to theirs except for the common interest in poetry. And so the popular poet usually leads a marginal existence in literary life. His fellow poets look on him as an anomaly or an anachronism. Reviewers find him eminently unnewsworthy. Publishers see little prestige attached to printing his work. Critics, who have been trained to celebrate complexity, consider him an amiable simpleton.dana gioia: "The Anonymity of the Regional Poet: Ted Kooser", from Can Poetry Matter? Essays on Poetry and American Culture (1992)
Every village has its simpleton, and if one does not exist they invent one to pass the time.Nikos Kazantzakis: Ch. 8 (Zorba the Greek (1946))
Well I don’t know how many pounds make up a ton, Of all the nobel prizes that I’ve never won, And I may be the mayor of simpleton, But I know one thing, And that’s I love you.andy partridge: "The Mayor of Simpleton"
"In hidden inwardness all are Christians; who would dare deny this? Anyone who would take it upon himself to deny it surely runs the risk of wanting to play the knower of hearts. So no one can deny it. That everyone is Christian in hidden inwardness is in this way a secretiveness that is almost locked up, so to speak, behind a jammed lock: it is impossible to find out whether all these thousands upon thousands actually are Christians, for they all are that, so it is said, in hidden inwardness. And not only for the Church but for everybody it holds true that one does not pass judgment on hidden and secret things, because one is unable to judge. Should it not, however, be possible to break this secretiveness and have a little disclosure without becoming guilty of being a knower of hearts? Yes, indeed! How so? In this way, that someone quite simply on his own responsibility takes it upon himself to confess Christ in the midst of Christendom. He does not judge a single person, far from it, but many will disclose themselves by the way they judge him. He does not claim to be a better Christian than others, no, far from it; on the contrary, to the others he makes the admission that they undoubtedly are better Christians than he, they who keep it hidden out of religious fear of winning honor and esteem, whereas he, poor simpleton that he is, on his own behalf is so afraid that it might prove to be shadowboxing with such an extreme Christianity, and therefore he holds to the old Christianity of confessing Christ. Therefore he does not inform against any of the others, that they are not Christians; far from it, he informs only against himself, that he is such a poor simpleton. Nevertheless the thoughts of many hearts would be disclosed by how they judge this poor simpleton, this imperfect Christian."søren aabye kierkegaard: p. 220 (Practice in Christianity (1850))
Why, simpleton, do you mix your verses with mine? What have you to do, foolish man, with writings that convict you of theft? Why do you attempt to associate foxes with lions, and make owls pass for eagles? Though you had one of Ladas's legs, you would not be able, blockhead, to run with the other leg of wood.Martial, Epigrams (c. 80-104 AD), Book X, Epigram 100.