"How can we distinguish what is biologically determined from what people merely try to justify through biological myths? A good rule of thumb is 'Biology enables, culture forbids.' [...] Culture tends to argue that it forbids only which is unnatural. But from a biological perspective, nothing is unnatural. Whatever is possible is by definition natural. A truly unnatural behaviour, one that goes against the laws of nature, simply cannot exist, so it would need no prohibition."

Excerpt from SAPIENS [A Brief History of Humankind] by YUVAL NOAH HARARI

Thoughts on biology, culture and mythology.