Deism

If you like, you can say the laws [of physics] are the work of God, but that is more a definition of God than a proof of his existence. Deism is a belief that God created the universe, but left everything else to its own devices.

Some views differ in specifics. Many deists believe that the Big Bang was initiated by a god (of their choice) and that everything that happened since is the consequence of scientific laws "created" at the same time. In other cases, deism implies that said God set in motion all the events needed to make life on Earth inevitable, and thus is still responsible. They may or may not believe in an afterlife. Deistic beliefs tend to differ from normal religion by the fact that the creator god is either not worthy of worship, or worship is completely unnecessary. This gives deism a greater overlap with atheism and freethought compared to religion.

The rise of deism
Deism arose and came to prominence during the philosophical change of the Enlightenment. As scientific knowledge increased, a climate of greater religious freedom developed in Europe, and inconsistencies in the Bible were more freely discussed. A result of this process was an increasing belief that the universe followed naturalistic principles and God's active intervention (and by extension, traditional religious praxis like prayer, priests, and scripture) was not necessary.

The Age of Reason
The classic text for deism is probably Thomas Paine's work The Age of Reason, where he states:

Deistic beliefs
An analogy frequently used for the deist God is a watchmaker &mdash; the watchmaker assembles the pieces and winds up the mechanism, but then just lets the watch run without interfering in it.

So, why did deists believe in a god at all? Partly because they were raised in a Christian milieu; partly because they thought of god as a natural focus and director of a seemingly rational, ordered universe. An argument from first cause thus seemed more plausible than it does in the light of modern science, which is now describing a universe that is more random and unpredictable than classical deism might have suspected.

Differences between deism & Christianity
The deist God is quite different from the God of traditional Abrahamic religions &mdash; it has no known personality, for example, and does not communicate with humans &mdash; and deists tend to see God as an abstract logical principle rather than an anthropomorphic being with wants and desires and a burning urge to control what we do with our pants off.

Rather than believe the Bible to be the Word of God, deists generally view the Old Testament as (at best) a historical novel with added supernatural trappings, and the New Testament as a straight religious screed. They view Jesus and Paul as philosophers, with no special trappings from an Almighty.

Unlike members of major revealed religions, many deists do not worship God, as they see no evidence that God (whatever form it takes) even wants to be worshiped. Deists who still wish to enjoy the trappings of church services will often attend Unitarian Universalist congregations, where lack of belief in the Bible is not generally stigmatized.

Deism vs. Pantheism
Richard Dawkins described the difference between these two systems of thought in his books. Deism, he suggested, is stripped-down theism, whereas pantheism is dressed-up atheism. Perhaps the main difference between them is that deists believe in an actual deity but don't talk about him much, whereas pantheists talk about God all the time but aren't referring to a deity when they do so.

Differences between deism & atheism
Deism holds a lot more common ground with atheism than it does with Abrahamic religions. Both hold the Bible and other religious works to be written mostly as human political works instead of being the holy word of any god. Both positions believe in naturalistic explanations for every phenomenon around them: except Deists use "goddidit" to explain the origin of the universe.

In fact, the only real difference lies in their explanation for the origins of time and space. Deists claim that a god created the universe and its rules, but did (and does) nothing else. Atheism simply takes this one step further by denying any existence, and therefore the involvement of any god at all, in the beginnings of the universe or otherwise; in this way, deists can be thought of as atheists in everyday practicality.

Famous deists and deism today
Well-known deists throughout history include Voltaire, Jean-Jacques Rousseau, Benjamin Franklin, Thomas Paine, and for much of his adult life, Thomas Jefferson. The fact that a number of Founding Fathers were deists remains one of the most common rebuttals to those espousing The United States as a Christian nation.

Anthony Flew repudiated atheism and became a deist at age 81.

Deism still exists but in a form distinct from the "classical" deism of the Enlightenment which was philosophically closer to present-day atheism.

Ceremonial deism
The term "ceremonial deism" originated in a speech by Eugene Rostow in 1962, a dean of the Yale Law School. He used it in reference to exceptions carved out of the Establishment Clause of the United States Constitution for "government-sponsored religious speech that was 'so conventional and uncontroversial as to be constitutional.'" At the time of his speech, the main exceptions were the addition of "One Nation Under God" to the The Pledge of Allegiance in 1954, and the creation of "In God We Trust" as the national motto in 1956, both during the height of the Red Scares. Many dominionists conveniently forget that these are recent phenomena and instead like to think that the USA was founded as a Christian nation.

In 1984, the US Supreme Court decided that a "government-sponsored nativity scene that also included reindeer and candy canes was constitutional." This was the first time that the Supreme Court used the term "ceremonial deism" in a decision. I would suggest that such practices as the designation of "In God We Trust" as our national motto, or the references to God contained in the Pledge of Allegiance to the flag can best be understood, in Dean Rostow's apt phrase, as a form a "ceremonial deism," [Footnote 2/24] protected from Establishment Clause scrutiny chiefly because they have lost through rote repetition any significant religious content. See Marsh v. Chambers, 463 U.S. at 463 U. S. 818 (BRENNAN, J., dissenting).

It's revealing that this sort of argument is made quite frequently by individuals who happen to be Christian, and very rarely by anyone who isn't… almost as if it were a transparent attempt to slip references to the locally popular god past the First Amendment.

Since the Supreme Court decision, Christians have tried to ceremonially-deism everything from the National Day of Prayer to Judge Roy Moore's erection of the Ten Commandments at a courthouse. The problem with this is that it's a double-edged sword: it subjects non-Christians to seeing Christian-sponsored trappings at every government office, while at the same time it dilutes Christian symbolism to meaninglessness, lacking "any significant religious content".

Law professor Martha C. Nussbaum wrote in 2008 that "'Ceremonial Deism' is an odd name for a ritual affirmation that a Deist would be very reluctant to endorse, since Deists think of God as a rational causal principle but not as a personal judge and father."

Secular deism
There has been a recent movement toward what could be labeled as secular deism. In 2020 Shahin Soltanian published a book titled The Kashfence Philosophy (Discovering through Rational and Scientific Analysis). In it, he introduces a philosophical idea that can be categorized as a deistic philosophical worldview. While he argues for the existence of an unlimited god and creator, he rejects all claims of revelations and prophets of God. Soltanian then goes on to introduce the Kashfence Philosophy adding that the basis for laws and practices of someone who adheres to the Kashfence philosophical view should be rational and scientific and secular in its nature. He describes the Kashfence ethical model in the following manner:

Soltanian then goes on to introduce two days of celebration based on secular ideals rather than religious significance. He writes:

Deism in Turkey
Religious officials in Turkey have stated that deism is an interesting "trap designed to lead Muslim youth away from Islam." Religious doubts have been increasingly taking hold amongst Turkish youth. These doubts are pushing many of Turkey's youth towards deism rather than Islam. Apparently, the faux-Islamist crap Erdoğan's been pushing has been causing many people to question the government's ethics, and by extension, Islam's.

The religious and political establishment's reaction to this is an unsurprisingly unwelcome one. Erdogan himself is quoted in the Ahval News article as saying "this is completely unacceptable." Given the Wannabe Sultan's Islamist agenda, this reaction isn't too surprising.