Plot hole: When George stops the machine for the first time, the candle burned down to about half of its size, which took according to his observations 98 minutes. But as the trip continues it takes seven hours for it to burn down completely. (00:25:45)
Trivia: In the video documenting the making of The Time Machine, Rod Taylor states that if you count the number of rivets on the spinning disk on the back of the machine, there are 365 of them (one for each day of the year).
Trivia: In the book, the Time Traveler finds a museum in 'The Palace of Green Porcelain'. Though this isn't mentioned in the film in any way, the room the 'speaking rings' are in has bright green walls. Nice touch.
George: What have you done? Thousands of years of building and rebuilding, creating and recreating so you can let it crumble to dust. A million years of sensitive men dying for their dreams... FOR what? So you can swim and dance and play.
George: David, I've got to tell it now. While I still remember it. Filby: Relax, try to relax. You've all the time in the world. George: You're right David, that's exactly what I have. All the time in the world.
George: When I speak of time, I'm speaking of the fourth dimension.