Excerpt from the DISCOVER magazine
"When Julius Caesar exhaled his last breath, he bequeathed approximately 1022 molecules to the atmosphere around him. Air leaving the lungs is 78 percent nitrogen, 16 percent oxygen, and 4 percent carbon dioxide—depleted in oxygen and enriched more than a hundredfold in carbon dioxide compared with what went in, due to human metabolism. Some of the carbon dioxide probably got trapped and digested by plants in a nearby garden, but the vast majority of the exhaled molecules began to fan out over an ever-widening area. Within a decade, that breath had dispersed completely around Earth, and most of it is still in circulation. Odds are, at least one of the molecules that Caesar (or Mozart or Martin Luther King, for that matter) relinquished when he died is flowing into your lungs as you read these lines."
As you were growing as a child, think of all the great, near great and unknown people who's molecules helped you grow. Think of all the bits and pieces that were woven together to make you who you are, who you will be. Let that thought grow.