"Of the four substances (and despite my dislike of rankings!), **it is ammonia that deserves the top position as our most important material**." ([Location 1612](https://readwise.io/to_kindle?action=open&asin=B08SGC3TD3&location=1612)) --- **Tags** -- [[quotes]], [[ammonia]], [[fertilisers]], **Source** -- [[202412030828 - B - How the World Really Works]]