“The Ice Age lasted for an unimaginably long time. Many tens of thousands of years, which was just as well, for otherwise these people would not have had time to invent all these things. But gradually the earth grew warmer and the ice retreated to the high mountains, and people – who by now were much like us – learnt, with the warmth, to plant grasses and then grind the seeds to make a paste which they could bake in the fire, and this was bread.”
