Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.
III, 11 - Meditations (c. 161–180 CE) - Book III
Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.
III, 11 - Meditations (c. 161–180 CE) - Book III