1. Approximately 80% of our air pollution stems from hydrocarbons released by vegetation, so let's not go overboard in setting and enforcing tough emission standards from man-made sources.
2. If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
3. Our most basic common link is that we all inhabit this planet. We all breathe the same air. We all cherish our children's future. And we are all mortal.
4. Who will tell whether one happy moment of love or the joy of breathing or walking on a bright morning and smelling the fresh air, is not worth all the suffering and effort which life implies.
5. 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.
6. What light is to the eyes - what air is to the lungs - what love is to the heart, liberty is to the soul of man.
7. Do not worry if you have built your castles in the air. They are where they should be. Now put the foundations under them.
8. Wealthy men can't live in an island that is encircled by poverty. We all breathe the same air. We must give a chance to everyone, at least a basic chance.
9. There is a kind of elevation which does not depend on fortune; it is a certain air which distinguishes us, and seems to destine us for great things; it is a price which we imperceptibly set upon ourselves.
10. Now I see the secret of making the best person: it is to grow in the open air and to eat and sleep with the earth.