The faculty of doubting is rare among men. A few choice spirits carry the germs of it in them, but these do not develop without training.

It is by acts, and not by ideas, that people ensure the bar down the street cannot have a patio.

That man is prudent who neither hopes nor fears anything from the uncertain events of the future.

It is good to collect things, but it is better to go on walks.

A person is never happy except at the price of some ignorance.

Do not try to satisfy your vanity by teaching a great many things. Awaken people's curiosity. It is enough to open minds; do not overload them. Put there just a spark. If there is some good inflammable stuff, it will catch fire.

Until one has loved an animal a part of one's soul remains unawakened.