"Small rooms or dwellings set the mind..." - Quote by Leonardo Da Vinci

“My works are the issue of simple and plain experience which is the true mistress.”

“The sun gives spirit and life to the plants and the earth nourishes them with moisture.”

“Avoid studies of which the result dies with the worker.”

“A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people.”

“What is the use of a house if you haven't got a tolerable planet to put it on?”

“Instead of a permit system or regulations, the Forest Service needs to reduce worldwide population growth to limit the number of visitors to wilderness.”

“Of course it is of no use to direct our steps to the woods, if they do not carry us thither. I am alarmed when it happens that I have walked a mile into the woods bodily, without getting there in spirit.... What business have I in the woods, if I am thinking of something out of the woods?”

“Actual knowledge is identical with its object: in the individual, potential knowledge is in time prior to actual knowledge, but in the universe as a whole it is not prior even in time. Mind is not at one time knowing and at another not. When mind is set free from its present conditions it appears as just what it is and nothing more: this alone is immortal and eternal (we do not, however, remember its former activity because, while mind in this sense is impassible, mind as passive is destructible), and without it nothing thinks.”

“The most clever and polite are content with only seeming attentive while we perceive in their mind and eyes that at the very time they are wandering from what is said and desire to return to what they want to say.”