Nature will bear the closest inspection. She invites us to lay our eye level with her smallest leaf, and take an insect view of its plain. — Henry David Thoreau
Nature is full of genius, full of the divinity; so that not a snowflake escapes its fashioning hand. — Henry David Thoreau, journal, 5 January 1856
We need the tonic of wildness, to wade sometimes in marshes where the bittern and the meadow-hen lurk, and hear the booming of the snipe; to smell the whispering sedge where only some wilder and more solitary fowl builds her nest, and the mink crawls with its belly close to the ground. — Henry David Thoreau
Shall I not have intelligence with the earth?
Am I not partly leaves and vegetable mould myself.
— Henry David Thoreau
If a man walks in the woods for love of them half of each day, he is in danger of being regarded as a loafer. But if he spends his days as a speculator, shearing off those woods and making the earth bald before her time, he is deemed an industrious and enterprising citizen.

Henry David Thoreau

A lake is the most beautiful and expressive feature of the landscape. It is the eye of life in which the beholder measures the depth of his own nature.

 Henry David Thoreau