The Thoreau Prize is a literary award granted annually to an accomplished writer in English who, with a comparable intensity, wishes to speak for nature and embodies the spirit of Thoreau as a gifted writer, insightful naturalist, and ethical thinker. Although it has traditionally been granted as a lifetime achievement award, the prize may also be given to mid-career nature writers who have demonstrated exceptional promise in any genre (poetry, fiction, or nonfiction). The annual award consists of $2,500 and a commemorative gift.