"Faults of the mind increase with old age as do those of the features. An old man is incapable of taking up new ideas because he lacks the power to assimilate them, so he clings with crabbed tenacity to the opinions of his maturity. He pompously believes himself able to deal with any problem. Contradiction infuriates him, and he regards it as lack of respect. "In my days," he says, "we never contradicted our elders." He forgets that in his day these same words were spoken to him by his grandfather. Unable to interest himself in what is happening round him and thereby keep himself up to date, he tells stories of his past over and over again; and these are so boring to his younger listeners that they end by avoiding him altogether. Solitude is the greatest evil of old age; one by one lifelong friends and relative disappear, and they cannot be replaced. The desert widens, and death would be pleasant if its rapid approach were not so curiously threatening."

“The art of resting is a part of the art of working. A man who is tired and greatly in need of rest cannot do any good work. We are all familiar with those terrible mornings after sleepless nights when our brains refuse to function. It would be useless then to attempt to apply the principles of the art of working. Those principles presuppose mind and body to be in good condition. The human organism cannot live without alternating work and rest.”

“Our poor bodies have strength and resources that we learn to know only when we are in the gravest situations.”

“Almost all of our fellow-beings deceive us, but a few of us have known the joy of meeting a woman or a man whose sincerity and frankness were genuine, who in almost every situation has behaved according to our wishes, and who in our most difficult moments has not forsaken us. Those few are familiar with that marvelous feeling: confidence. With at least one person they are able for a little while each day to lift the heavy visor of their helmets, breathe freely, and show their faces and their hearts without fear.”

“To amuse is not to teach. The object of teaching is to erect a framework of knowledge in a child's mind and gradually to bring the child as near as may be to the average level of intelligence. Later in life the facts taught by experience and new discoveries will add themselves to this framework. It is wrong to attempt to upset this natural order and to appeal to a child's mind by diverting it with the spectacle of modern life. Teaching by means of pictures, radio, and the cinema is in itself ineffective; these methods must not be used unless they involve some effort or special enthusiasm. That which is learned without difficulty is soon forgotten, and for the same reason, oral instruction which does not require the pupil's personal participation is almost always rather useless. Eloquence slides in and out of young minds. To listen is not to work.”

“Marriage makes a man more vulnerable by doubling the expanse of sail exposed to the tempests of social life.”

“The aspiring author, whether genius or not, should never let a day pass without writing at least a few lines.”