Someone mentioned time, and I think time kind of relates to this. Time I feel doesn't exist, it's something humans on earth created to keep track of and make sense of how one moment leads to another. If we lived on any other planet, time would be different also and our perception on it would change too.
Point is, if there is no such thing as time, there is no beginning, there is no end...there has always been a universe and there will always be a universe.
Time to go watch Wilfred....