Labour without joy is base. Labour without sorrow is base. Sorrow without labour is base. Joy without labour is base.

The greatest reward is not what we receive for our labor, but what we become by it.

When men do not love their hearth, nor reverence their thresholds, it is a sign that they have dishonoured both ... Our God is a house-hold God, as well as a heavenly one; He has an altar in every man's dwelling.

In all things that live there are certain irregularities, and deficiencies which are not only signs of life, but sources of beauty. No human face is exactly the same in its lines on each side, no leaf perfect in its lobes, no branch in its symmetry.

Science has to do with facts, art with phenomena. To science, phenomena are of use only as they lead to facts; and to art, facts are of use only as they lead to phenomena.

One can't be angry when one looks at a penguin.

The last act crowns the play.