Jean Charlier de Gerson (13 December 1363 – 12 July 1429) was a French scholar, educator, reformer, and poet, Chancellor of the University of Paris, a guiding light of the conciliar movement and one of the most prominent theologians at the Council of Constance. Aged fourteen, he left Gerson-lès-Barby to study at the college of Navarre in Paris under Gilles Deschamps, (Aegidius Campensis) and Pierre d'Ailly (Petrus de Alliaco), who became his life-long friend.

Note to arabic readers : For the original arabic version of the books, check "other editions" in the book that interests you) Universally known by the title of "Muhyi al-Din" (The Reviver of the Religion) and "al-Shaykh al-Akbar" (The Greatest Shaykh) Ibn 'Arabī (Arabic: ابن عربي‎) (July 28, 1165 - November 10, 1240) was an Arab Sufi Muslim mystic and philosopher. His full name was Abū 'Abdullāh Muḥammad ibn 'Alī ibn Muḥammad ibn al-`Arabī al-Hāṭimī al-Ṭā'ī (أبو عبد الله محمد بن علي بن محمد بن العربي الحاتمي الطائي). Muhammad ibn al-Arabi and his family moved to Seville when he was eight years old. In 1200 CE, at the age of thirty-five, he left Iberia for good, intending to make the hajj to Mecca. He lived in Mecca for some three years, where he began writing his Al-Futūḥāt al-Makkiyya (The Meccan Illuminations). In 1204, he left Mecca for Anatolia with Majd al-Dīn Isḥāq, whose son Ṣadr al-Dīn al-Qunawī (1210-1274) would be his most influential disciple. In 1223, he settled in Damascus, where he lived the last seventeen years of his life. He died at the age of 76 on 22 Rabi' II 638 AH/November 10, 1240CE, and his tomb in Damascus is still an important place of pilgrimage. A vastly prolific writer, Ibn 'Arabī is generally known as the prime exponent of the idea later known as Waḥdat al-Wujūd (literally Unity of Being), though he did not use this term in his writings. His emphasis was on the true potential of the human being and the path to realising that potential and becoming the perfect or complete man (al-insān al-kāmil). Some 800 works are attributed to Ibn 'Arabā, although only some have been authenticated. Recent research suggests that over 100 of his works have survived in manuscript form, although most printed versions have not yet been critically edited and include many errors.

Ibn Al Farid ابن الفارض، هو أبو حفص شرف الدين عمر بن علي بن مرشد الحموي، من حماة في سوريا، أحد أشهر الشعراء المتصوفين، وكانت أشعاره غالبها في العشق الإلهي حتى أنه لقب بـ "سلطان العاشقين". ولد بمصر سنة 576 هـ الموافق 1181م. ولما شب اشتغل بفقه الشافعية، وأخذ الحديث عن ابن عساكر. ثم سلك طريق الصوفية ومال إلى الزهد. رحل إلى مكة في غير أشهر الحج، واعتزل في واد بعيد عنها. وفي عزلته تلك نظم معظم أشعاره في الحب الإلهي، حتى عاد إلى مصر بعد خمسة عشر عامًا. توفي سنة 632 هـ الموافق 1235م في مصر ودفن بجوار جبل المقطم في مسجده المشهور.

The poetry of Shaykh Umar Ibn al-Farid is considered by many to be the pinnacle of Arabic mystical verse (Rumi, probably the best known in the West of the great Sufi poets, wrote primarily in Persian, not Arabic.) Ibn al-Farid's two masterpieces are The Wine Ode, a beautiful meditation on the "wine" of divine bliss, and "The Poem of the Sufi Way", a profound exploration of spiritual experience along the Sufi Path and perhaps the longest mystical poem composed in Arabic. Both poems have inspired in-depth spiritual commentaries throughout the centuries, and they are still reverently memorized by Sufis and other devout Muslims today. He was born in Cairo to parents from Hama in Syria, lived for some time in Mecca, and died in Cairo. His poetry is entirely Sufic and he was esteemed as the greatest mystic poet of the Arabs. Some of his poems are said to have been written in ecstasies. Every Friday, Cairenes gather at his tomb to listen to readings of his poems. Ibn al-Farid is referred to as sultan al-ashiqin, "the sultan of lovers".