0 the principle that animals and plants suited to the conditions they live in are more likely to stay alive and produce other animals and plants than those that are not suited --
1 the belief that only the people with a strong desire to succeed and the ability to change as conditions change will achieve success: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.
