Travis [drinks milk from the baby bottle from his own baby self]: Berurrrrp! 

 Erica: What about paradoxes, huh? Butterfly effects? Back to the Futures?
Dr. Tom: I love that movie.
Erica: If I change the past, if I don’t get drunk, won’t that cause, like, World War III in the present?
Dr. Tom: Or is it possible that your alcohol consumption, though very important to you, might not play a role in influencing world events? 

1. Time Gun (26 Jan 2009)
2. Back to the Future Sex Scenes (9 Feb 2012)
3. Hardly Working / Killing Hitler (11 Oct 2012)

 I invented a time machine to make the world a better place, which is why I’m going to travel back to kill Adolf Hitler. 

 Hosin Tau was Minister of Internal Security in the Silver Republic, a nation-state carved out of the Grand Union of the American South in World War VIII. 

 If I had the power to decide never to meet him again, I reasoned, surely I had the power to change the course of the relationship for the better. 

 I’m certain I didn’t send myself any mail recently, but then again, I have plans to do so in the near future—or near past, I suppose. 

 I wish I’d met Jane before she was married. 

 Your gods have abandoned you, Romanus. Your weapon has no power against us. 

 They know I read golden age sci-fi and they think my Fix is interstellar travel, so they won’t assign me to anything after 2500CE. 

 His mind races faster than a horse galloping downhill. Try as he will, he can’t mistake her meaning. If Rosencrantz & Guildenstern Are Dead is dead itself—a century dead!—then Hamlet must be older yet. But his head had only a little more hair, and that only a little less gray, when he wrote it. An impossibility—an impossibility he has just seen staged. 

 Based on the linguistic evidence, I must conclude Madoc is truly a man out of time. 

 “You may have free will,” Ann said, “but not me. I am a product of causal determinism.” 

 Yes, I learned that later. I must’ve read it as a kid (was 11 then).
I must look it up sometime. I knew Mack, too, visited him in Mexico in 1966. Odd how the mind works. 

—Gregory Benford on his website, responding to a fan’s question

 How many times . . . it’s not sci-fi, it’s science fiction or sf, which can also stand for speculative fiction. 

 I’m a PC, and I’m headed to the future. 

 Yet your kingdom needs you to return, so I held time open for you to go back and be king once more. If you so choose. 

 You know, coming back in time, changing history . . . that’s cheating. 

 Unfortunately, the time machine ain’t working right now. We gotta get some new space-time capacitors. 

 As soon as my time machine was finished, I traveled back to 1890, so I could kill Hitler . . . 

 Harry’s going to upset a multibillion dollar applecart. I don’t know what strings he pulled to get an import license for a priceless artifact from another timeline, but it’s not going to be worth what he thinks. 

 And I wanted to get a hologram of the eiffel tower before it was wrecked by the earthquake. My mother asked me to. 

 Rick: It’s the only real solution to solving this fossil fuel crisis we’re experiencing, and it boils down to two simple words.
Matt Lauer: Renewable biofuels.
Rick: Close . . .: time warps. 

 Mark had been supplied with a thousand names and bank account numbers, identities of organizations and individuals throughout the Twentieth Century together with details of various winning lottery numbers, sporting events and stock market fluctuations plus a handful of gold coins. Luckily the field was strong enough to encompass his clothes and a few personal effects. Mark often fantasized about how much more difficult his life would have been had he been forced to arrive naked like the time travelers in the Terminator movies. 

 They’ll have no one to remember their lives but you; and all because you will believe the recruiters when they tell you that to join the organizaton you must kill your own grandfather, and that if you do not join the organization, you will die.
(It’s an antinepotism measure, they’ll tell you, nodding, not unkindly. And a test of your ruthlessness and determination. And besides, we all did it when it was our turn.) 

 Three weeks in prehistory, Mr. Redcliff. Aren’t you excited? 

 It’s like everybody knows everything about me, but I’m invisible at the same time. 

 There’s two big rules: You never jump back to alter your own past, and you never jump unsupervised. 

 “Because there wasn’t time,” Fiona said. He glared at her. “I had just enough time to realize that I would have to time it myself, not enough time to explain.” 

 And after she gives him the blanket she happens to be carrying, he explains to her that he’s a time traveler. Now, for some reason I’ll never understand, she believes him. 

 Louise hesitated. “The Good Book promises us free will.” 

 She was strectched out on one of the deck chairs on the balcony of their apartment. They had rented it temporarily until they could cash in a few more diamonds, pretty much worthless in their own time but extremely valuable here, and buy a house. They were rich of course. Why would they come back poor?

Cork was standing at the railing pointing at his bell bottoms. “People are looking at me funny,” he said. “Nobody else is wearing these.” Their pre-migration research indicated people did, but they could have been a couple of years off. 

 I mean, the first thing they all want you to do is explain Proven Time, as if anyone could. The accident that set man’s sight on the One True Timeline from which all others spring was no blessing. 

 See kids, in the Jurassic period, there’s no grass or flowers. 

 The hands are moving now. Time is passing now. 

 Rose: Are you a ghost?
Tolly: I don’t think I can be. I’m not dead. 

 Tales of intrigue, adventure, and the mysterious occult that will stir your imagination and make your very blood run cold. This is Dark Adventure Radio Theatre, with your host Chester Langfield. Today’s episode: H.P. Lovecraft’s The Shadow Out of Time! 

 I realize I may seem a little obsessive, but is it so wrong to wish I could have saved her from being burned? She was such a remarkable person and it was such a horrible fate. 

 What did you try to do? Post somebody at the Texas School Book Depository? 

 There's always someone who can fly. 

 I’ve already got four turtles to worry about. These are . . . superfluous. 

 We’ll discuss the ethics of time travel in the spring semester. 

 This is going to sound odd to you, Herel, but the reason for the blank spot in your memory is that you’ve just come from the future. 

 Okay, guys, I’ve been waiting twenty years for this. Just like we practiced, one, two, ah one-two-three-four: ♫ Whooooa, ooooooh, ooooooh, oooh, for the longest time . . . ♫