"Loving/engaging [in an intimate understanding of] knowledge is a religion to be followed..."

--Attributed to Imam ʿAlī (d. 40/661). See, for instance: Abū Tālib al-Makkī (d. 386/996), Qūt al-Qulūb, v.1, 242; and Abū Jaʿfar al-Ṣadūq (d. 381/991), Kamāl al-Dīn wa Tamām al-Niʿmah, 290.

"(On the front of his doorway Plato had written 'Let no one who is not a geometer enter my house.' That is, 'Let no one who is unjust come in here', for geometry is equality and justice)"

--Johannes Tzetzes (d. ca 1180 CE), Chiliades, Book 8, Story 249. (Translated by Andrew Barker. See: David Fowler, The Mathematics of Plato's Academy, 203.)