Those herbs which perfume the air most delightfully, not passed by as the rest, but, being trodden upon and crushed, are three; that is, burnet, wild thyme and watermints. Therefore, you are to set whole alleys of them, to have the pleasure when you walk or tread.
To waste, to destroy our natural resources, to skin and exhaust the land instead of using it so as to increase its usefulness, will result in undermining in the days of our children the very prosperity which we ought by right to hand down to them amplified and developed.
Nature is not always tricked in holiday attire, but the same scene which yesterday breathed perfume and glittered as for the frolic of the nymphs, is overspread with melancholy today. Nature always wears the colors of the spirit.
It is not necessarily those lands which are the most fertile or most favored in climate that seem to me the happiest, but those in which a long struggle of adaptation between man and his environment has brought out the best qualities of both.
Each thing tends to move towards its own nature. I always desire happiness which is my true nature. My nature is never a burden to me. Happiness is never a burden to me, whilst sorrow is.
"In the woods we return to reason and faith. There I feel that nothing can befall me in life~~no disgrace, no calamity (leaving me my eyes), which nature cannot repair."
My scientific work is motivated by an irresistible longing to understand the secrets of nature and by no other feeling. My love for justice and striving to contribute towards the improvement of human conditions are quite independent from my scientific interests.
I want to realize brotherhood or identity not merely with the beings called human, but I want to realize identity with all life, even with such things as crawl upon earth.