If a man will begin with certainties, he shall end in doubts, but if he will content to begin with doubts, he shall end in certainties. – Francis Bacon
Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt. – Norman Cousins
Outright bans on plastic bags may not be the best solution, but education and incentives to get people to stop using them are necessary. – David Suzuki
Once the command of the air is obtained by one of the contending armies, the war becomes a conflict between a seeing host and one that is blind. – H. G. Wells