My research activity has been devoted to building common languages between theoretical physicists and scientists of other branches of the scientific community, that may benefit from the concepts of criticality, complex networks, weak chaos, negentropy, fractional derivatives, random walks, and other mathematical and physical concepts. I have contributed to discovering new models and novel signal-analysis techniques and applied them to life sciences and human behavior. I am now doing little research and mostly devoted to teaching physics to young students, having in mind that physics is much more than elementary particles and Hamiltonian systems.