...The concept of infinitesimals was proposed by Newton and Leibniz. In those days, people knew nothing about elementary particles and atoms and thought that, in principle, any substance can be divided into any number of parts. But now it is clear that as soon as we reach the level of elementary particles, further division is impossible. After all, even the very name ''elementary particle'' says that such a particle has no parts, that is, it cannot be divided into 2, 3, etc. So, there are no infinitesimals in nature, and the usual division is not universal: it makes sense only up to some limit.Would it seem obvious? And then it is clear that fundamental quantum physics must be built without infinitesimals. It would seem that everyone understands that the construction of such a physics is far from being an easy task, and attempts at such a construction should be encouraged. However, my stories, described below, show that, as a rule, the establishment not only does not encourage such attempts, but does everything to ensure that the results in this direction are not published.In addition to the infinitesimal problem, I describe other problems in which I proposed new approaches, but since they are not in the spirit of what the establishment does, I had big problems with the publication. But, of all these tasks, there is one that probably overshadows all the others. This is a dark energy problem.In all my works on this problem I explain that there are no problems with explaining the cosmological acceleration and therefore dark energy and quintessence are nonsense. It would seem that if the establishment is honest, then they should at least read [1] and directly say that I do not understand something or they. But they pretend that they do not notice my publications on this topic.