Each of us is a unique strand in the intricate web of life and here to make a contribution.
The peculiar striations that define someone's personality are too numerous to know, no matter how close the observer. A person we think we know can suddenly become someone else when previously hidden strands of his character are called to the fore by circumstance.
Not one of your pertinent ancestors was squashed, devoured, drowned, starved, stranded, stuck fast, untimely wounded, or otherwise deflected from its life's quest of delivering a tiny charge of genetic material to the right partner at the right moment in order to perpetuate the only possible sequence of hereditary combinations that could result -- eventually, astoundingly, and all too briefly -- in you.
Man did not weave the web of life, he is merely a strand in it. Whatever he does to the web, he does to himself.