One that i love to put as reference, specially when dealing with time travel and the dangers of knowing the future, is PKDick's Meddler. Maybe is not the most

One that i love to put as reference, specially when dealing with time travel and the dangers of knowing the future, is PKDick's Meddler. Maybe is not the most emotive (Tolkien's Leaf by Niggle and Ted Chiang's Story of your life are superior in that) or the most far into the future one (Asimov's The last question should be required reading), nor even the funniest one (hard pick, Asimov's The endochronic properties of resublimated thiotimoline fits there, if even because the story behind). But not is a so bad option.