He thought that by shifting the clocks forward in summer, people like him would be able to have more leisure time outside to do things like collect insects.
Research has also shown that immediately after the clocks go forward in spring, the risk of heart attacks and strokes grows by 24%, which some attribute to the loss of an hour of sleep.
In fact, the actual idea of putting the clocks forward in summer, and then back in winter, was proposed by two men at roughly the same time, but on opposite sides of the world.