In his correct view of the value of speculative thought, Jehuda Halevi stood alone in his own time, and anticipated many centuries. The thinkers of his time, Jewish, Mahometan and Christian, Rabbi, Ulema and Churchman, bowed the knee to Aristotle, whose philosophical judgments upon God and His relation to the world they placed above Holy Writ, or at least they strained and subtilized the Biblical verses until they expressed a philosophical idea, and thus they became at once believers and sceptics. Jehuda Halevi alone had the courage to point out the limits set by nature to human thought, and to proclaim, "Thus far shalt thou go, and no further." Philosophy has no right to attack well-accredited facts, but must accept them as undeniable truths; it must start with them for bases, bringing to bear its power of co-ordinating the facts and illuminating them by the aid of reason. Just as in the realm of nature the intellect dare not deny actual phenomena when they present themselves, however striking and contrary to reason they may appear, but must strive to comprehend them, so must it act when touching on the question of the knowledge of God. This excellent and irrefutable idea, which of late years, after many wanderings in the labyrinth of philosophy, has at length discovered a way for itself, was first enunciated by Jehuda Halevi. In a poem, which is as beautiful as its matter is true, he thus expresses his opinion of the Greek spirit which studious disciples of philosophy so eagerly affected: "Do not be enticed by the wisdom of the Greeks, Which only bears fair blossoms, but no fruit. What is its essence? That God created not the world, Which, ever from the first, was enshrouded in myths. If to its words you lend a ready ear, you Return with chattering mouth, heart void, unsatisfied."