Memory of Five Philosophers. I.N.Theodorakopoulos (1900-1981), P. K. Kanellopoulos (1902-1986), K. D. Tsatsos (1899-1987), E. P. Papanoutsos (1900-1982), B. N. Tatakis (1987-1986). Texts for the Five Philosophers. Biographical Notes and Complete List of