Nicolas Cusanus

• Of Learned Ignorance
• Opera omnia Volumen XIX/0. Sermones IV, Fasciculus 0 Indices sermones CCIV-CCXIII
• Opera omnia Volumen XIX/5. Sermones IV, Fasciculus 5 (Sermones CCLVIIIb1sCCLXVII)
• Opera omnia Volumen XIX/6. Sermones IV, Fasciculus 6 (Sermones CCLXVIIIb1sCCLXXXII)
• Opera omnia Volumen XIX/7. Sermones IV, Fasciculus 7 (Sermones CCLXXXIIIb1sCCXCIII)
• Opera omnia Volumen XVIII/0. Sermones III, Fasciculus 0 Indices sermones CXXII-CCIII