One of the secrets of life is to keep our intellectual curiosity acute.
The fear of life is the favorite disease of the 20th century.
A student never forgets an encouraging private word, when it is given with sincere respect and admiration.
A middle-aged cat will often play as unreservedly as a kitten, though he knows perfectly well it is only a game.
Real happiness is not dependent on external things.
To a man the greatest blessing is individual liberty; to a dog it is the last word in despair.