Discussion is an exchange of knowledge; argument is an exchange of ignorance

Discussion is an exchange of knowledge; an argument an exchange of ignorance.

A happy marriage is the union of two good forgivers.

If there be anything that can be called genius, it consists chiefly in ability to give that attention to a subject which keeps it steadily in the mind, till we have surveyed it accurately on all sides.

Another good reducing exercise consists in placing both hands against the table edge and pushing back.

Great art is never produced for its own sake. It is too difficult to be worth the effort.