Ecology and spirituality characterize the nature view of indigenous peoples. In January 1854 the indigenous chief Si'ahl (better known as Seattle) made an eloquent speech explaining why the land cannot be sold. Since the 19th century, many attempts have been made to recreate the lost words of Si'ahl. Here we present, from what we know today, the most reliable version of the speech in a bilingual and illustrated edition, with a commentary on key themes and quality of speech.