"Time does not exist in itself,
but only through perceived objects,
from which the concept of past,
present and furute ensue."
Lucretius, De rerum natura lib. 1, v 960ss
"Without the concepts,
place, void and time, change cannot be.
It is therefore clear that their investigation has to be carried out, by studying each of them seperately."
Aristotle. Physics, Book III, part 1.
