The history of men of science has one peculiar advantage, as it shows the importance of little things in producing great results. Smeaton learned his principle of constructing a lighthouse, by noticing the trunk of a tree to be diminished from a curve to a cyclinder ... and Newton, turning an old box into a water-clock, or the yard of a house into a sundial, are examples of those habits of patient observation which scientific biography attractively recommends.

Few footprints of the great remain in the sand before the ever-flowing tide. Long ago it washed out Homer's. Curiosity follows him in vain; Greece and Asia perplex us with a rival Stratford-upon-Avon. The rank of Aristophanes is only conjectured from his gift to two poor players in Athens. The age made no sign when Shakespeare, its noblest son, passed away.

Occasionally a single anecdote opens a character; biography has its comparative anatomy, and a saying or a sentiment enables the skilful hand to construct the skeleton.

It is the empiric who never fails.

Newton found that a star, examined through a glass tarnished by smoke, was diminished into a speck of light. But no smoke ever breathed so thick a mist as envy or detraction.

It is that faculty by which we discover and enjoy the beautiful, the picturesque, and the sublime in literature, art, and nature; which recognizes a noble thought, as a virtuous mind welcomes a pure sentiment by a involuntary glow of satisfaction. But while the principle of perception is inherent in the soul, it requires a certain amount of knowledge to draw out and direct it.

Poetical taste is the only magician whose wand is not broken. No hand, except its own, can dissolve the fabric of beauty in which it dwells. Genii, unknown to Arabian fable, wait at the portal. Whatever is most precious from the loom or the mine of fancy is poured at its feet. Love, purified by contemplation, visits and cheers it; unseen musicians are heard in the dark; it is Psyche in the palace of Cupid.