Consider Hippocrates, the physician. He was one of the eminent philosophers who believed in God and acknowledged His sovereignty. After him came Socrates who was indeed, wise, accomplished and righteous. He practised self-denial, repressed his appetites for selfish desires and turned away from material pleasures. He withdrew to the mountains where he dwelt in a cave. He dissuaded men from worshipping idols and taught them the way of God, the Lord of Mercy, until the ignorant rose up against him. They arrested him and put him to death in prison. Thus relateth to thee this swift-moving Pen. What a penetrating vision into philosophy this eminent man had! He is the most distinguished of all philosophers and was highly versed in wisdom. We testify that he is one of the heroes in this field and an outstanding champion dedicated unto it. He had a profound knowledge of such sciences as were current amongst men as well as of those which were veiled from their minds. Methinks he drank one draught when the Most Great Ocean overflowed with gleaming and life-giving waters. He it is who perceived a unique, a tempered, and a pervasive nature in things, bearing the closest likeness to the human spirit, and he discovered this nature to be distinct from the substance of things in their refined form. He hath a special pronouncement on this weighty theme. Wert thou to ask from the worldly wise of this generation about this exposition, thou wouldst witness their incapacity to grasp it. Verily, thy Lord speaketh the truth but most people comprehend not.
(Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 146147)