It takes a great man to be a good listener.
Knowledge comes, but wisdom lingers. It may not be difficult to store up in the mind a vast quantity of facts within a comparatively short time, but the ability to form judgments requires the severe discipline of hard work and the tempering heat of experience and maturity.
Nothing in the world can take the place of persistence.
Nature is inexorable. If men do not follow the truth they cannot live.
