Nobody ought to be too old to improve: I should be sorry if I was; and I flatter myself I have already improved considerably by my travels. First, I can swallow gruel soup, egg soup, and all manner of soups, without making faces much. Secondly, I can pretty well live without tea.

The dead of midnight is the noon of thought.

It would be difficult to determine whether the age is growing better or worse; for I think our plays are growing like sermons, and our sermons like plays.

Man is the nobler growth our realms supply, And souls are ripened in our northern sky.

Let us confess a truth, humiliating to human pride; - a very small part only of the opinions of the coolest philosopher are the result of fair reasoning; the rest are formed by his education, his temperament, by the age in which he lives, by trains of thought directed to a particular track through some accidental association - in short, by prejudice.

The most characteristic mark of a great mind is to choose some one important object, and pursue it for life.

many things I knew, I have forgotten; many things I thought I knew, I find I know nothing about; some things I know, I have found not worth knowing; and some things I would give - O what would one not give to know? are beyond the reach of human ken.