By my intimacy with nature I find myself withdrawn from man. My interest in the sun and the moon, in the morning and the evening, compels me to solitude.

The setting sun is reflected from the windows of the alms-house as brightly as from the rich man's abode.

If anything ail a man, so that he does not perform his functions, if he have a pain in his bowels even,- for that is the seat of sympathy,-he forthwith sets about reforming the world.

When one man has reduced a fact of the imagination to be a fact to his understanding, I foresee that all men will at length establish their lives on that basis.

We do not associate the idea of antiquity with the ocean, nor wonder how it looked a thousand years ago, as we do of the land, for it was equally wild and unfathomable always.

I would give all the wealth of the world, and all the deeds of all the heroes, for one true vision.

Where there is an observatory and a telescope, we expect that any eyes will see new worlds at once.