Civilizaton is the interval between Ice Ages.

Contentment is rare among men as it is natural among animals

Sixty years ago I knew everything. Now I know nothing. Education is a progressive discovery of our own ignorance.

The only real revolution is in the enlightenment of the mind and the improvement of character, the only real emancipation is individual, and the only real revolutionists are philosophers and saints.

Nothing is new except arrangement.

Time sanctifies everything; even the most arrant theft in the hands of the robber's grandchildren becomes sacred and inviolable property.

A cat has a reputation to protect. If it had a halo, it would be worn cocked to one side.