Thanks to the work of writers and actors, fictional characters can be just as quotable as real people.  I’ve done my best to credit the writers who created the characters and the actors who played them when sourcing these quotes.

“Tell the Wind and the Fire to stop, but don’t tell me.”
— Madame Defarge, A Tale of Two Cities (Charles Dickens)

“Fear is the spinal injury to the soul, making invalids of the strong and weak alike.”
— “Too Much Coffee Man” (Shannon Wheeler)

“There were moments … when it seemed that all one could be asked was just to keep the ashtrays clean, the bed made, the wastebaskets emptied, as if one never got to the real things because of the constant exhausting battle to keep ordinary life from falling apart.”
Mrs. Stevens Hears the Mermaids Singing (May Sarton)

“The truth is, I talk to God all the time. And no offense, but He never mentioned you.”
–Philippe Gaston, “Ladyhawke” (played by Matthew Broderick, written by Edward Khmara)

“Just once I’d like it if someone coupled the phrase “with all due respect” with some sort of sentiment that was geniunely respectful.”
–Admiral Jellico (Peter David)

“Some of us find our lives abridged even before the paperback comes out.”
–Opus the Penguin (Berkeley Breathed)

“I’ve developed a philosophy…I only dread one day at at time!”
–Charlie Brown (Charles Schulz)

“A straight line may be the shortest distance between two points, but it is by no means the most interesting.”
–the Third Doctor (played by Jon Pertwee, in “The Time Warrior,” written by Robert Holmes)

“No man is free who works for a living, but I’m available.”
–Illya Kuryakin (played by David McCallum)

“What’s the point in being grown-up if you can’t be childish?”
–the Fourth Doctor

“I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.”
–from Dune, by Frank Herbert

“I must not have fun. Fun is the time-killer. Fun is for children, customers, and the help. I will forget fun. I will take a pass on it. And while it is going, I will turn a blind eye toward it. When fun is gone there will be nothing. Only I will remain — I, and my will to win. Damn, I’m good!”
–from National Lampoon’s Doon

“I have never understood why it should be necessary to become irrational in order to prove that you care. Or, indeed, why it should be necessary to prove it at all.”
–Kerr Avon (played by Paul Darrow, from an episode of Blake’s 7 written by Terry Nation)

“Rest is for the weary. Sleep is for the dead!”
–the Sixth Doctor

“One’s impulse is to run away from trouble; to find an escape. But there is no escape from the necessity of growth. One must grow, or die.”
–Henry Barbour, One Man’s Family (played by J. Anthony Smythe, written by Carlton E. Morse)

“People like to invent monsters and monstrosities. Then they seem less monstrous themselves. When they get blind-drunk, cheat, steal, beat their wives, starve an old woman, when they kill a trapped fox with an axe or riddle the last existing unicorn with arrows, they like to think that the Bane entering cottages at daybreak is more monstrous than they are. They feel better then. They find it easier to live.”
–Geralt of Rivia, written by Andrzej Sapkowski