"It is a mistake to classify the passions as lawful and unlawful, so as to yield to the one and refuse the other. All alike are good if we are their masters; all alike are bad if we abandon ourselves to them. Nature forbids us to extend our relations beyond the limits of our strength; reason forbids us to want what we cannot get, conscience forbids us, not to be tempted, but to yield to temptation. To feel or not to feel a passion is beyond our control, but we can control ourselves. Every sentiment under our own control is lawful; those which control us are criminal. A man is not guilty if he loves his neighbour's wife, provided he keeps this unhappy passion under the control of the law of duty; he is guilty if he loves his own wife so greatly as to sacrifice everything to that love."

“Watch a cat when she comes into a room for the first time; she goes from place to place, she sniffs about and examines everything, she is never still for a moment; she is suspicious of everything till she has examined it and found out what it is. It is the same with the child when he begins to walk, and enters, so to speak, the room of the world around him. The only difference is that, while both use sight, the child uses his hands and the cat that subtle sense of smell which nature has bestowed upon it. It is this instinct, rightly or wrongly educated, which makes children skilful or clumsy, quick or slow, wise or foolish.”

“As soon as we have contrived to give our pupil an idea of the word "Useful," we have got an additional means of controlling him, for this word makes a great impression on him, provided that its meaning for him is a meaning relative to his own age, and provided he clearly sees its relation to his own well-being. This word makes no impression on your scholars because you have taken no pains to give it a meaning they can understand, and because other people always undertake to supply their needs so that they never require to think for themselves, and do not know what utility is. "What is the use of that?"”

“The supreme enjoyment is in satisfaction with oneself ; it is in order to deserve this satisfaction that we are placed on earth and endowed with freedom.”

“I shall need only myself to be happy.”

“Chère amie, ne savez-vous pas que la vertu est un état de guerre, et que, pour y vivre, on a toujours quelque combat à rendre contre soi?”

“Days of absence, sad and dreary,Clothed in sorrow's dark array,—Days of absence, I am weary: She I love is far away.”