ob ▁and ▁Wal da ▁H ew at : ▁Text ▁and ▁Author ship , ▁Com mer cial ▁Print ing ▁Press , ▁ 1 9 7 6 . ▁ ▁Claude ▁Sum ner , ▁Eth iop ian ▁Philosoph y , ▁vol . ▁III : ▁The ▁Tre at ise ▁of ▁Z ara ▁Ya ec ob ▁and ▁Wal da ▁H ew at : ▁An ▁Analysis , ▁Com mer cial ▁Print ing ▁Press , ▁ 1 9 7 8 . ▁▁ ▁Claude ▁Sum ner . ▁Class ical ▁Eth iop ian ▁Philosoph y , ▁Com mer cial ▁Print ing ▁Press , ▁ 1 9 8 5 . ▁Cont ains ▁an ▁English ▁translation ▁of ▁Z era ▁Y ac ob ' s ▁treat ise ▁and ▁four ▁other ▁texts . ▁ ▁Claude ▁Sum ner , ▁" The ▁Light ▁and ▁the ▁Sh adow : ▁Z era ▁Y ac ob ▁and ▁Wal da ▁He yw at : ▁Two ▁Eth iop ian ▁Philosoph ers ▁of ▁the ▁Se vent e enth ▁Century ," ▁in ▁W ire du ▁and ▁Abraham , ▁ed s ., ▁A ▁Comp an ion ▁to ▁African ▁Philosoph y , ▁ 2 0 0 4 . ▁ ▁External ▁links ▁ ▁Br end an ▁R itch ie , ▁" E th iop ian ▁Philosoph y : ▁A ▁Br ief ▁Introduction ▁with ▁Bibli ography ▁and ▁Se lections " ▁ ▁D ag ▁Her b j ør ns r ud , ▁" The ▁African ▁En light en ment ," ▁A E ON , ▁ 1 3 ▁December ▁ 2 0 1 7 ▁ ▁Eth iop ian ▁Philosoph y ▁-