... one should accept the truth from whatever source it proceeds.

Foreword to The Eight Chapters Of Maimonides On Ethics, translated by Joseph I. Gorfinkle, Ph.D. Columbia University Press, New York (1912). Page 35-36. https://archive.org/details/eightchaptersofm00maim

The eight chapters of Maimonides on ethics (Shemonah perakim); : Maimonides, Moses, 1135-1204 : Free Download & Streaming : Internet Archive