British naturalist Alfred Russell Wallace was without peer in the 19th century except for one name: Charles Darwin. One of Wallace's most astute observations about nature has gotten totally forgotten in the whole debate over the "survival of the fittest." Wallace made a surprising discovery about the saving nature of struggle.

One day Wallace was observing moths struggling to hatch out from their cocoons. One of the larger insects seemed to be having a particularly hard time getting out. After hours of watching this moth beat desperately with its yet undeveloped wings to break out of the cocoon, Wallace couldn't take it anymore. Moved by the creature's life-and-death struggle, Wallace decided to lend a helping hand. Gently, being careful not to injure the insect, Wallace used his sharp k…