Thinking Dervish

We should not be ashamed of recognizing truth and assimilating it from whatever source it may reach us, even though it might come from earlier generations and foreign peoples. For him who seeks truth there is nothing of more value than truth itself. It never cheapens or abases him who searches for it, but ennobles and honors him.

--Abu Yusuf al-Kindi (d. 873, CE), On First Philosophy.