Of Books and Sloths: The sloth. Nature’s champion sluggard. One of the most misunderstood animals in the world. As recent as a century ago, the sloth was regarded as a "blunder of nature." To capture this story, the Moody Institute of Science did research in the laboratory and in the jungles of Panama. The message, Of Books and Sloths, points out the dependability and the accuracy of the Scriptures as compared with man's writings that must be constantly revised to correct inaccuracies.