Behold the Turtle. He Makes Progress Only When His Neck Is Out

James B. Conant? Atomic Scientist? Anonymous Cartoonist? Leslie Groves? G. B. Carter? P. C. Keith? Dear Quote Investigator: Making headway in life requires taking significant risks. This thought has been presented with a homespun aquatic analogy. Here are three versions: Behold the turtle! He makes progress only when his neck is out. Behold the turtle. …