Edward B. Tylor
"...belief in Spiritual Beings."
Tylor, Edward B. (2008[1871]): Religion in Primitive Culture, in Lambek, M.: A Reader in the Anthropology of Religion, 2. Ausg., Malden et al.: Blackwell, S. 25.
Clifford Geertz
"(1) a system of symbols which acts to (2) establish powerful, pervasive, and long-alsting moods and motivations in men by (3) formulating conceptions of a general order of existence and (4) clothing these conceptions with such an aura of factuality that (5) the moods and motivations seem uniquely realistic."
Geertz, Clifford (2008[1966]): Religion as a cultural system, in: Lambek, M.: A Reader in the Anthropology of Religion, 2. Ausg., Malden et al.: Blackwell, S. 59, Hervorhebung im Original.