قسمت هایی از مقاله ویکیپدیا انگلیسی درباره امام علی 

Ali is respected not only as a warrior and leader, but as a writer and religious authority. A numerous range of disciplines from theology and exegesis to calligraphy and numerology, from law and mysticism to Arabic grammar and rhetoric are regarded as having been first adumbrated by Ali. According to a Hadith which is narrated by Shia and Sufis, Muhammad told about him “I’m the city of knowledge and Ali is its gate…” Muslims regard Ali as a major authority on Islam

Ali was also a great scholar of Arabic literature and pioneered in the field of Arabic grammar and rhetoric. Numerous short sayings of Ali have become part of general Islamic culture and are quoted as aphorisms and proverbs in daily life. They have also become the basis of literary works or have been integrated into poetic verse in many languages