Zephyrus
Tyrants and Slaves
Saying the universe has always existed is a little misleading. It has existed for ~14 billion years, but that is the only time that has ever existed. There was never a time before that when there was no universe.
I'm interested in a theory that says that the universe lives in an expansion-contraction cycle, where it expands from a singularity (Big Bang), reaches a certain point where it cools (Heat Death) and then contracts back into a singularity (Big Crunch) which expands again into a new universe. So saying there's no time before our universe is assuming that (1) there was no universe before this one and (2) no other universes exists.
But this isn't quite relevant to the topic. I'm starting a new thread.