White thoughts stand luminous and firm,

Like statues in the sun;

Refreshed from supersensuous founts,

The soul to clearer vision mounts."[5]

A man must be able to escape from his cares and fears, as well as from hunger and want of sleep; so that another Arabian proverb has its coarse truth: "When the belly is full, it says to the head, Sing, fellow!" The perfection of writing is when mind and body are both in key; when the mind finds perfect obedience in the body. And wine, no doubt, and all fine food, as of delicate fruits, furnish some elemental wisdom. And the fire, too, as it burns in the chimney; for I fancy that my logs, which have grown so long in sun and wind by Walden, are a kind of muses. So of all the particulars of health and exercise, and fit nutriment, and tonics. Some people will tell you there is a great deal of poetry and fine sentiment in a chest of tea.

2. The experience of writing letters is one of the keys to the modus of inspiration. When we have ceased for a long time to have any fulness of thoughts that once made a diary a joy as well as a necessity, and have come to believe that an image or a happy turn of expression is no longer at our command, in writing a letter to a friend we may find that we rise to thought and to a cordial power of expression that costs no effort, and it seems to us that this facility may be indefinitely applied and resumed. The wealth of the mind in this respect of seeing is like that of a looking-glass, which is never tired or worn by any multitude of objects which it reflects. You may carry it all round the world, it is ready and perfect as ever for new millions.

3. Another consideration, though it will not so much interest young men, will cheer the heart of older scholars, namely, that there is diurnal and secular rest. As there is this daily renovation of sensibility, so it sometimes, if rarely, happens that after a season of decay or eclipse, darkening months or years, the faculties revive to their fullest force. One of the best facts I know in metaphysical science is Niebuhr's joyful record that, after his genius for interpreting history had failed him for several years, this divination returned to him. As this rejoiced me, so does Herbert's poem "The Flower." His health had broken down early, he had lost his muse, and in this poem he says:—

"And now in age I bud again,

After so many deaths I live and write;

I once more smell the dew and rain,