It is a powerful message in the poster. I try my best to implement it . I am always in a thrifty mode reducing and reusing things.
I once read one article where Japan has adopted the principle of minimal use..they even use minimum sound to talk and other things to avoid noise pollution.
Japanese practice a philosophy which is called 'Mottainai'. According to this philosophy, each and every objects have soul. So people are encouraged to show their respect for the things around them, by using them properly and not wasting them.
Even though, Japan is a small nation, we can learn a lot from it.
Adversities really teach many useful lessons, where there are less adversaries, there is less learning.
Life is like a boat in a sea, there is a lot to learn, so never close your mind to your limited experiences!