Dionysius Areopag., [16], [63].

Djâhîz, [34], [51], [53] sqq.

ibn Djebril, [19].

Djuzdjânî, [146].

Duns Scotus, [212].

Empedocles, [22] sq., [52], [78], [127].

Euclid, [18], [72].

Fârâbî, [106] sqq., [133]–136, [139], [142], [145], [149], [156] sqq., [170], [174], [177], [179], [189], [199], [209], [211] sq. [[215]]

Fazârî, [9].

Firdausî, [133], [155].