Farabi is generally known to be the "Second Teacher", after the first teacher, Aristotle.
Farabi's extensive knowledge, disection, commentaries and evaluation of Aristotle earned him the
this title. He also invented new paradigms in philosophical thought (NeoPlatonism), moving away from Metaphysics to practice and his discovery of the limits of human knowledge based on his reflections on the First Cause (i.e. God) thus breaking away from Plato and Aristotle.
Avicenna (arabic: ibn Sina, the father of medicine), born at a later period, similarly benefitted from Farabi's learning and fused his philosophy with a religious interpretation.
Their works were systematic in textual ordering facillatiting the study of their works more readily.
Although Avicenna "lost the battle" in acceptance of his Philosophy in th the Islamic world which was deemed extreme and contradictory to the fundamental principles of Islam (see Ghazali, "
Incoherence of the philosophers") their framework was later taken on by the Christian West.
In the creation of the Moden Western civilization, these two were Pivotal.