The River of Doubt: Theodore Roosevelt's Darkest Journey

by Candice Millard

Throughout his adult life, Roosevelt would relish physical exertion, and he would use it not just as a way to keep his

body fit and his mind sharp but as his most effective weapon against depression and despair.

“Black care,” he explained, in a rare unguarded comment on the subject, “rarely sits behind a rider whose pace is fast enough.”

a single tree in the Amazon can serve as home to more than forty different species of ant, rendering even the most casual contact with it a nightmare of painful bites.