Everything starts somewhere, although many physicists disagree.

But people have always been dimly aware of the problem with the start of things. They wonder aloud how the snowplow driver gets to work, or how the makers of dictionaries look up the spellings of the words. Yet there is the constant desire to find some point in the twisting, knotting, raveling nets of space-time on which a metaphorical finger can be put to indicate that here, here, is the point where it all began…

Terry Pratchett, Hogfather