Douglas Adams (1952 - 2001) was an English writer and humorist most famous for authoring The Hitchhiker's Guide to the Galaxy. Outside of literature, Adams was a major advocate for environmentalism as well as a proponent of technological innovation. He died of a heart attack at the young age of 49.

"We don't have to save the world. The world is big enough to look after itself. What we have to be concerned about is whether or not the world we live in will be capable of sustaining us in it."

Photo credit: "Douglas adams portrait" by michael hughes from berlin, germany - douglas adams Uploaded by Diaa_abdelmoneim. Licensed under CC BY-SA 2.0 via Wikimedia Commons (since modified).