«The demographic triumph of Europeans in the temperate colonies is one part of a biological and ecological takeover which could not have been accomplished by human beings alone, gunpowder notwithstanding. We must at least try to analyze the impact and success of all the immigrant organisms together — the European portmanteau of often mutually supportive plants, animals, and microlife which in its entirety can be accurately described as aggressive and opportunistic, an ecosystem simplified by ocean crossings and honed by thousands of years of competition in the unique environment created by the Old World Neolithic Revolution.»

Via Paulo Tomás Neves