Today we use 100 million barrels of oil every day. [...] There are no rules to keep that oil in the ground. So we can't save the world by playing by the rules. Because the rules have to be changed. Everything needs to change. And it has to start today.
Notes from Wikiquote
Cited in No One is Too Small to Make a Difference, Penguin Books, 2019, page 12 (ISBN 9780141991740).