The Bible contains a collection of different writings including the Jewish Tanakh called the "Old Testament," and Christian writings called the "New Testament." Both Jews and Christians believe the Bible was inspired by God.

Sacraments are solemn observances or ceremonies that are rich in symbolism and attributed to either Jesus or God. Different denominations acknowledge a different number of sacraments, usually two or seven. The sacraments common to nearly all include baptism and communion, also called the Eucharist or the Lord's Supper.

The Church of Jesus Christ of Latter-Day Saints is often called the Mormon Church. It developed in the United States in the 1800s. Many Christians do not consider the Mormons as Christians because they have three additional scriptures, The Book of Mormon, Doctrine and Covenants, and Pearl of Great Price along with the Bible. On the other hand, Mormons, like all other Christians believe Jesus Christ is the Son of God.

Socrates never wrote down any of his discussions. His student Plato wrote down dialogues, some of which are probably based on events Plato witnessed. Others use Socrates as the central figure in the dialogue, but the dialogs were probably created by Plato himself. The dialogues are meant to increase our understanding of ideas and virtues through discussion.

Reincarnation, called samsara in Sanskrit, is the belief that souls are reborn when the body dies. In Hinduism and Buddhism the cycle of reincarnation continues until the soul gains spiritual enlightenment. Plato described a process similar to samsara but did not describe an end to the cycle.