What he was saying is that all motion is relative. Think about this: If you were the only thing in the universe, how could you tell if you were moving or not. There would be nothing for you to look at to measure your motion. You are not moving unless you are moving relative to something else.
Another thing to think about... time and space are the same thing. The more space you travel through, the more time you travel through. The faster through space you travel, the faster through time you travel.
Also, since nothing can go the speed of light, your perception of the passage of time is dilated as you accelerate. This makes you "think" that you are going faster than light, when what is really happening is your clocks (on the space ship) are slowing down relative to the clocks on earth. Remember the old “Twins” experiment? One twin stays on earth, the other gets in a spaceship and travels near the speed of light and then returns to meet his twin on earth. Only, when the space-traveling twin gets home, he finds that his twin on earth is an old man. The space-traveling twin traveled through more space, and therefore, more time.
I recommend that you read A Brief History of Time
by Stephen Hawking
http://www.amazon.com/exec/obidos/ASIN/0553380168/qid=1012582070/sr=8-1/ref=sr_8_71_1/104-3177095-9611913