Jon A, 
Those three criteria (copied below) are Plato's. 
Aristotle's father was a physician, and he trained his son for the first
18 years.  Aristotle admitted that Plato's mathematical forms are perfect,
but he recognized the need to value and deal with the facts of life and
the world.  Aristotle's writings on biology are more voluminous than his
writings on philosophy.
Philo Judaeus of Alexandria was an early
neoplatonist, who wrote many volumes  to reconcile the Torah with Greek
philosophy.  Until the 13th century, most philosophers and theologians
were neoplatonists, who accepted as much of Aristotle's writings as they
could force into a Platonic framework.
But the rediscovery of
Aristotle and the commentaries by Averroes (Ibn Rushd), originally from
Arabic translations and later from the original Greek, revolutionized
theology (Aquinas) as well as science (Roger Bacon).  Until 1270, bell
ringers depended on sun dials and hour glasses.  But by 1300, every town
in Europe of any size had a church with a clock that automatically rang
the bells.  
Aristotle made imperfections safe for philosophy,
science, and engineering.  With his three universes, Peirce reconciled
Plato (mathematics) and Aristotle (actuality).   Mathematics includes the
universe of possibilities (all hypotheses) and necessities (all theorems
provable from the hypotheses).   The laws of science are mathematical
theorems whose hypotheses have been tested to a high level of
confidence.
John
______________________JA>
According to John Dewey, it is because of the human quest for perfect
certainty that
philosophy has inherited three problematic viewpoints:

<QUOTE>

the first, that certainty, security, can be found only in the fixed and
unchanging;

the second, that knowledge is the only road to that which is intrinsically
stable
and certain;

the third, that practical activity is an inferior sort of thing, necessary
simply
because of man’s animal nature and the
necessity for winning subsistence from the environment.

</QUOTE> — John Dewey • The Quest for Certainty

Jon A, Those three criteria (quoted below) are Plato's.

Aristotle's father was a physician, and he trained his son for the first 18 years.  Aristotle admitted that Plato's abstract forms were perfect, but he recognized the need to value and deal with the imperfections of life and the world.

Philo Judaeus of Alexandria was an early Neoplatonist, who wrote many volumes  to reconcile the Torah with Greek philosophy.

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