The Max Planck's quote says that things will change if we look at things differently.
The world is dictated by similar opinions concerning any one object or type of person. We can group these opinions into what we call "public opinion."
We do not always have to rely on public opinion in case we want to see reality in an innovative and new way. Public opinion may be incorrect and propagandistic.
We must look at our surroundings differently and rely first on ourselves, then on those we believe are competent in that particular environment.