A spectre is haunting physics---the spectre of non-thermal processes. Manifesting itself in astroparticle physics, all classical disciplines of physics and astronomy have entered into a holy alliance to exorcise this spectre: While astronomers try to destroy it with ignorance, convinced that only thermal processes are of importance to the dynamics of the Universe, particle physicists obscure it in the clouds of mystified admiration, simply because the Universe works on energy scales which are far above of their own technical and economical capabilities. It is high time to understand the energy scales of astroparticle physics in those of the Universe itself, by linking the existence of their basic essence, cosmic rays, via a universal mechanism to the ground reservoir of all non-thermal energy, gravitation. By this we meet the nursery tale of the enigmatic, mysterious sources of cosmic rays with a set of numbers naturally derived from cosmological parameters, which manifest themselves in a large range of astrophysical objects that stand in rank and file along a diagonal in the famous Hillas-plot, and in fact only have in common that they efficiently convert gravitational energy. While this manifesto, promoting the cosmological revolution in astroparticle physics, does not release us from detailed modelling of cosmic ray and multimessenger sources in order to understand all the details delivered by current experiments, it does help to clear up our view on the problem and to avoid some common fallacies and misconceptions.