 
      
      Aristotle
            (384-322 BCE) 
        "The Father
                of Biology"
    Aristotle
        was a student of Plato
        (ca. 428~423 – 348~347 BCE) (they are
        respectively the white-haired and dark-haired figures at the
        center of Raphael's 1511 fresco of the School
              of Athens), and the author of several books
        describing in detail the natural history of creatures in and
        about the Aegean Sea near Greece. He attempted one of the first
        systematic of living organisms, and developed a theory of
        progressive evolution, based on development of simpler to more
        complex organisms.
      
    Plato was
        himself the student of Socrates
        (470-399 BCE): the mnemonic for the historical order is SPA.