James Russell Lowell.

Can anything be sadder than work left unfinished? Yes; work never begun.

Christina Rossetti.

When we feel a strong desire to thrust our advice on others, it is usually because we suspect their weakness; but we ought rather to suspect our own.

Colton.

Sorrow is the mere rust of the soul. Activity will cleanse and brighten it.

Dr. Johnson.

Efforts to be permanently useful, must be uniformly joyous—a spirit all sunshine—graceful from very gladness, beautiful because bright.

Carlyle.

Read the philosophers, and learn how to make life happy; seeking useful precepts and brave and noble words which may become deeds.