Wisława Szymborska said this quote

I am who I am.A coincidence no less unthinkablethan any other.I could have had differentancestors, after all.I could have flutteredfrom another nestor crawled bescaledfrom under another tree.Nature's wardrobeholds a fair supply of costumes:spider, seagull, field mouse.Each fits perfectly right offand is dutifully worninto shreds.