Regarding the last two lines:
Gravity and distance change the passage of light
Gravity and distance change the color of right
Neil Peart: "The lyrics that surround it are rather unremarkable, and the context of the song seems to cast these lines in the sense of "don't be self-righteous" - something rather uninteresting. But I have used the above metaphor, changed it around, suited it to my needs. I am interested in the double sense of gravity and distance. Physical vs. metaphysical. I take the second meaning of the quotation as another way of saying there is a great difference between theory and practice. When things are serious, when we see them up close, they look different."
Mike - Mountlake Terrace, Washington