“Human beings, because we're so clever, have removed every single one of those population limiting factors... So nothing controls our increase in numbers except our own wish. Since I first started making television programs, the population of the world has increased three times. That's an extraordinary notion. Can it increase four times? Can it increase five times? The Earth is a finite size. So a point will eventually come when we run out of food, when we run out of space and when we will have destroyed most of the natural world. So ought we to do something about it before that happens?”
![“We only know a tiny proportion about the complexity of the natural world. Wherever you look, there are still things we don’t know about and don’t understand. [...] There are always new things to find out if you go looking for them.” quote by David Attenborough](https://sms4smile.com/quotes/img-quotes/b04/david-attenborough-2396_discover_we-only-know-a-tiny-proportion-about-the_112007.jpg)
![“There was another reason [she] took her books whenever they went away. They were her home when she was somewhere strange. They were familiar voices, friends that never quarreled with her, clever, powerful friends -- daring and knowledgeable, tried and tested adventurers who had traveled far and…” quote by Cornelia Funke](https://sms4smile.com/quotes/img-quotes/639/cornelia-funke-908_adventurer_there-was-another-reason-she-took-her-bo_3074.jpg)
