A Brief Overview of the History of Islam - attached pdf below. [americanhumanist.org]
Many medieval Muslim thinkers pursued humanistic, rational and scientific discourses in their search for knowledge, meaning and values. A wide range of Islamic writings on history and philosophical theology show that medieval Islamic thought was open to the humanistic ideas of individualism, secularism, skepticism and liberalism.

— Humanists strive to embrace the moral principle in the Golden Rule, the ethic of reciprocity, and treat each other as one would like to be treated themselves — with tolerance, consideration and compassion. The Golden Rule, a unifying humanistic principle, cannot be claimed for any one philosophy or religion. Throughout the ages, many traditions have promoted one or other versions of it. In Islam, the Golden Rule is: “Not one of you truly believes until you wish for others what you wish for yourself.” — The Prophet Muhammad, Hadith