I don't need a friend who changes when I change and who nods when I nod; my shadow does that much better. Plutarch
If a listener nods his head when you're explaining your program, wake him up. Alan Perlis
There are these two young fish swimming along and they happen to meet an older fish swimming the other way, who nods at them and says "Morning, boys. How's the water?" And the two young fish swim on for a bit, and then eventually one of them looks over at the other and goes "What the hell is water?" David Foster Wallace
That sort of half sigh, which, accompanied by two or three slight nods of the head, is pity's small change in general society. Charles Dickens
Homer sometimes nods. Italian Proverb
Ever homer sometimes nods. Italian Proverb