This paper is dedicated to the memory of Clifford Truesdell, to whom I acknowledge my debt and gratitude. I present some recent results of mine on thermomechanics of crystalline solids, a research on which I began working during my stay at The Johns Hopkins University, 1977University, -1979. Then, in the last section, I mention some unusual merits of Truesdell, which I experienced in my scientific career and are not widely known.