Religion is the belief in Spiritual Beings (Edward B Tylor)
Religion is the propitiation or conciliation of powers superior to man (James George Frazer)
Religion is the feelings, acts, and experiences of individual men in their solitude, so far as they apprehend themselves to stand in relation to whatever they may consider the divine (William James)
Religion is a unified system of beliefs and practices relative to sacred things (Émile Durkeim)
Religion is the state of being grasped by an ultimate concern (Paul Tillich)
Religion is a system of symbols which acts to establish powerful, persuasive, and longlasting moods and motivations (Clifford Geertz)
Religion is a symbolic transformation of experience (Thomas F. O'Dea)
Religion is a system of symbols by means of which people orient themselves in the world with reference to both ordinary and extraordinary powers, meanings, and values (Catherine L. Albanese)
Religion is a means to ultimate transformation (Frederick Streng)
Religion is a means of ultimate transformation and/or orientation (Joseph Adler)