Miguel de Cervantes

“ Eat not garlic nor onions, lest they find out thy boorish origin by the smell; walk slowly and speak deliberately, but not in such a way as to make it seem thou art listening to thyself, for all affectation is bad. ”

“ For no one should quarrel with his governor, or him in authority over him, because he will come off the worst, as he does who puts his finger between two back and if they are not back teeth it makes no difference, so long as they are teeth; and to whatever the governor may say there's no answer, any more than to 'get out of my house' and 'what do you want with my wife?' and then, as for that about the stone and the pitcher, a blind man could see that. ”

“ The last counsel I will give thee now, though it does not tend to bodily improvement, I would have thee carry carefully in thy memory, for I believe it will be no less useful to thee than those I have given thee already, and it is this--never engage in a dispute about families, at least in the way of comparing them one with another; for necessarily one of those compared will be better than the other, and thou wilt be hated by the one thou hast disparaged, and get nothing in any shape from the one thou hast exalted. ”

“ Let them make light of me and abuse me; 'they'll come for wool and go back shorn;' 'whom God loves, his house is known to Him;' 'the silly sayings of the rich pass for saws in the world;' and as I'll be rich, being a governor, and at the same time generous, as I mean to be, no fault will be seen in me. 'Only make yourself honey and the flies will suck you;' 'as much as thou hast so much art thou worth,' as my grandmother used to say; and 'thou canst have no revenge of a man of substance.'"
"Oh, God's curse upon thee, Sancho!" here exclaimed Don Quixote ”

“ When thou ridest on horseback, do not go lolling with thy body on the back of the saddle, nor carry thy legs stiff or sticking out from the horse's belly, nor yet sit so loosely that one would suppose thou wert on Dapple; for the seat on a horse makes gentlemen of some and grooms of others. ”