Al Gore

Theocritus

(c. 300 BC - c. 260 BC)

William Blake

(1757 - 1827)

Edward Abbey

(1927 - 1989)

Photograph of American novelist Jack London.

Jack London

(1876 - 1916)

Edward Hoagland

Andrew Jackson

(1767 - 1845)

American diplomat, scholar, and conservationist George Perkins Marsh.

George Marsh

(1801 - 1882)

Giovanni Pico Della Mirandola

(1463 - 1494)

Frederick Jackson Turner

(1861 - 1932)

Charles Bowden

(1945 - 2014)

Pretty-shield

(1856 - 1944)

Robinson Jeffers

(1887 - 1962)

English poet Edmund Spenser.

Edmund Spenser

(1552 - 1599)

American poet Anne Bradstreet.

Anne Bradstreet

(c. 1612 - 1672)

Loren Eiseley

(1907 - 1977)

Novalis

(1772 - 1801)

John Muir

(1838 - 1914)

American physicist Richard Feynman.

Richard Feynman

(1918 - 1988)

Chris Rose