"Nobody will deny that there is at least some roughness everywhere"

This quote by Benoit Mandelbrot talks to the idea that life is not ideal which there will always be some level of problem or difficulty. He is suggesting that no matter where we go or what we do, there will always be some form of battle or challenge. This might be translated as a reminder to accept the flaws of life and to be prepared to deal with the troubles that come our method. It might also be seen as a call to action to work towards making the world a much better place, as we can strive to reduce the amount of roughness that exists. Eventually, this quote works as a tip that life is not always easy, however that we can still aim to make it much better.