Religious belief is a strong belief in a supernatural power or powers that control human destiny. Such a state may relate to the existence, characteristics and worship of a deity or deities, divine intervention in the universe and human life, or values and practices centered on the teachings of a spiritual leader. In contrast to other belief systems, religious beliefs are usually codified.

While the term religious belief is often considered to have the same meaning as religion, the latter term usually deals with both ideas and religious behaviour. Religious belief can be seen as a focus exclusively on ideas.

Religious adherents often distinguish religious belief from superstition. Both superstition and traditional religions are non-materialistic, do not see the world as being subject to laws of cause and effect and presume that there are immaterial forces influencing our lives. Both religion and superstition seek meaning in otherwise random and chaotic events. There is, thus, a continuum between what is termed “superstition” and the ideas in animistic religions.

Ludwig Josef Johann Wittgenstein (26 April 1889 – 29 April 1951) was an Austrian-British philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language. He was professor in philosophy at the University of Cambridge from 1939 until 1947. In his lifetime, he published just one book review, one article, a children's dictionary, and the 75-page Tractatus Logico-Philosophicus (1921). In 1999, his posthumously published Philosophical Investigations (1953) was ranked as the most important book of 20th-century philosophy, standing out as "...the one crossover masterpiece in twentieth-century philosophy, appealing across diverse specializations and philosophical orientations".Bertrand Russell described him as "the most perfect example I have ever known of genius as traditionally conceived, passionate, profound, intense, and dominating".

Born in Vienna into one of Europe's wealthiest families, he gave away his entire inheritance. Three of his brothers committed suicide, with Ludwig contemplating it too. He left academia several times: serving as an officer on the frontline during World War I, where he was decorated a number of times for his courage; teaching in schools in remote Austrian villages, where he encountered controversy for hitting children when they made mistakes in mathematics; and working during World War II as a hospital porter in London, where he told patients not to take the drugs they were prescribed, and where no-one knew he was one of the world's most famous philosophers. He described philosophy, however, as "the only work that gives me real satisfaction."

Jaggi Vasudev (Kannada: ಸಧ್ಗುರು ಜಗ್ಗಿ ವಾಸುದೇವ್ Tamil: சத்குரு ஜக்கி வாசுதேவ் Hindi: सदगुरु जग्गी वासुदेव Telugu: సద్గురు జగ్గి వాసుదేవ్ ) also known as Sadhguru, is an Indian yogi and mystic. He founded the Isha Foundation, a non-profit organization which offers yoga programs around the world, including India, United States, England, Lebanon, Singapore, Canada, Malaysia, Uganda and Australia. The Foundation is also involved in various social and community development activities, which have resulted in the Foundation being granted special consultative status with the Economic and Social Council of the United Nations.

Sadhguru was born as Jagadish Vasudev on 3 September 1957 in Mysore, Karnataka, India. His father was a doctor. At the age of 11, Vasudev began yogic practices such as asanas and pranayama under the tutelage of Raghavendra Rao more commonly referred to as Malladihalli Swami. Sadhguru excelled at school and was a very bright student. He graduated with a degree in English Literature from the Mysore University.

Jayaprakash Narayan (11 October 1902 – 8 October 1979), widely known as JP Narayan, Jayaprakash, or Loknayak, was an Indian independence activist and political leader, remembered especially for leading the opposition to Indira Gandhi in the 1970s and for giving a call for peaceful Total Revolution. His biography, Jayaprakash, was written by his nationalist friend and an eminent writer of Hindi literature, Ramavriksha Benipuri. In 1998, he was posthumously awarded the Bharat Ratna, India's highest civilian award, in recognition of his social work. Other awards include the Magsaysay award for Public Service in 1965. The airport of Patna is also named after him.

Jayprakash Narayan was born on 11 October 1902 in the village of Sitabdiara, Bihar, India. He came from a middle-class family.

Sandip Das, a biographer, says that

Returning from the US in late 1929 as a supporter of Marxist theories, Narayan joined the Indian National Congress on the invitation of Jawaharlal Nehru in 1929; Mahatma Gandhi became his mentor in the Congress. He shared the same house at Kadam Kuan in Patna with his close friend and nationalist Ganga Sharan Sinha (Shrivastava). with whom he shared the most cordial and lasting friendship.

Christopher Eric Hitchens (13 April 1949 – 15 December 2011) was an English American author and journalist whose career spanned more than four decades. Hitchens, often referred to colloquially as "Hitch", was a columnist and literary critic for New Statesman, The Atlantic, The Nation, The Daily Mirror, The Times Literary Supplement and Vanity Fair. He was an author of twelve books and five collections of essays. As a staple of talk shows and lecture circuits, he was a prominent public intellectual, and his confrontational style of debate made him both a lauded and controversial figure.

Hitchens was known for his admiration of George Orwell, Thomas Paine and Thomas Jefferson, as well as for his excoriating critiques of various public figures including Mother Teresa, Bill Clinton, Henry Kissinger and Diana, Princess of Wales. Although he supported the Falklands War, his key split from the established political left began in 1989 after what he called the "tepid reaction" of the Western left to the Rushdie Affair. The September 11 attacks strengthened his internationalist embrace of an interventionist foreign policy, and his vociferous criticism of what he called "fascism with an Islamic face." His numerous editorials in support of the Iraq War caused some to label him a neoconservative, although Hitchens insisted he was not "a conservative of any kind", and his friend Ian McEwan describes him as representing the anti-totalitarian left.