“A human being weighing 70 kilograms contains among other things:
-45 litres of water
-Enough chalk to whiten a chicken pen
-Enough phosphorus for 2,200 matches
-Enough fat to make approximately 70 bars of soap
-Enough iron to make a two inch nail
-Enough carbon for 9,000 pencil points
-A spoonful of magnesium
I weigh more than 70 kilograms.

And I remember a TV series called Cosmos. Carl Sagan would walk around on a set that was meant to look like space, speaking in large numbers. On one of the shows he sat in front of a tank full of all the substances human beings are made of. He stirred the tank with a stick wondering if he would be able to create life.
He didn’t succeed.”