It is difficult to retain what you may have learned unless you should practice it. -Difficile est tenere quae acceperis nisi exerceas
Pliny the YoungerIt is wonderful how the mind is stirred and quickened into activity by brisk bodily exercise.
Pliny the YoungerAnd as in men's bodies, so in government, that disease is most serious which proceeds from the head.
Pliny the Younger