Before Socrates...
Before Socrates, a party appeared calling themselves the Sophists, meaning the scholars. They made human perception the measure of reality and used fallacious arguments in their deductions. Gradually, “sophist” ( sophistes ) lost its original meaning and came to mean one who makes use of fallacious arguments. Thus we have the word “sophistry,” which has the cognate in Arabic safsafa , with the same meaning.
Socrates, out of humility and also perhaps a desire to avoid being identified with the Sophists, forbade people to call him a sophistes , a scholar.[^2] He therefore called himself a philosophos , a lover of wisdom. Gradually, philosophos , with its original sense of lover of wisdom, displaced sophistes as meaning scholar, and the latter was downgraded to its modern sense of one who uses fallacious reasoning. Philosophia became synonymous with wisdom.
Therefore, philosophos as a technical term had been applied to no one before Socrates, and it was not applied to anyone immediately after him. The term philosophia , too, had no definite meaning in those days; it is said that not even Aristotle used it. Later, use of the terms philosophia and philosophos became widespread. Muslim Usage The Muslims took the word “philosophy” from the Greeks. They gave it an Arabic form and an Eastern nuance, using it to mean pure rational knowledge.
Philosophy in the common Muslim usage did not refer to a special discipline or science; it embraced all rational sciences, as opposed to transmitted sciences, such as etymology, syntax, declension, rhetoric, stylistics, prosody, exegesis, tradition, and jurisprudence. Because this word had a generic meaning, only one who comprehended all the rational sciences of his time, including theology, mathematics, the natural sciences, politics, ethics, and domestic economy, would be called a philosopher.
Thus it was said, Whoever is a philosopher becomes a world of knowledge, analogous to the objective world.” When Muslims sought to reproduce Aristotle's classification of the sciences, they used the words falsafa or hikma . They said, “Philosophy, that is, the rational science, has two divisions: the theoretical and the practical.” Theoretical philosophy addresses things as they are; practical philosophy addresses man's actions as they ought to be.
Theoretical philosophy is threefold: theology or high philosophy, mathematics or middle philosophy, and natural science or low philosophy.