Giordano Bruno
Giordano Bruno born Filippo Bruno, was an Italian
Italian people
The Italian people are an ethnic group that share a common Italian culture, ancestry and speak the Italian language as a mother tongue. Within Italy, Italians are defined by citizenship, regardless of ancestry or country of residence , and are distinguished from people...

Dominican Order
The Order of Preachers , after the 15th century more commonly known as the Dominican Order or Dominicans, is a Catholic religious order founded by Saint Dominic and approved by Pope Honorius III on 22 December 1216 in France...

A friar is a member of one of the mendicant orders.-Friars and monks:...

, philosopher, mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 and astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

. His cosmological theories went beyond the Copernican
Copernican heliocentrism
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform...

 model in proposing that the Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

 was essentially a star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

, and moreover, that the universe contained an infinite number of inhabited worlds populated by other intelligent beings. He was burned at the stake
Execution by burning
Death by burning is death brought about by combustion. As a form of capital punishment, burning has a long history as a method in crimes such as treason, heresy, and witchcraft....

 by civil authorities in 1600 after the Roman Inquisition
Roman Inquisition
The Roman Inquisition was a system of tribunals developed by the Holy See during the second half of the 16th century, responsible for prosecuting individuals accused of a wide array of crimes related to heresy, including Protestantism, sorcery, immorality, blasphemy, Judaizing and witchcraft, as...

 found him guilty of heresy
Christian heresy
Christian heresy refers to non-orthodox practices and beliefs that were deemed to be heretical by one or more of the Christian churches. In Western Christianity, the term "heresy" most commonly refers to those beliefs which were declared to be anathema by the Catholic Church prior to the schism of...

 for his pantheism
Pantheism is the view that the Universe and God are identical. Pantheists thus do not believe in a personal, anthropomorphic or creator god. The word derives from the Greek meaning "all" and the Greek meaning "God". As such, Pantheism denotes the idea that "God" is best seen as a process of...

 and turned him over to the state, which at that time considered heresy illegal.

The Divine Light is always in man, presenting itself to the senses and to the comprehension, but man rejects it.

As quoted in Life and Teachings of Giordano Bruno : Philosopher, Martyr, Mystic 1548 - 1600 (1913) by Coulson Turnbull

Nature is none other than God in things... Animals and plants are living effects of Nature; Whence all of God is in all things... Think thus, of the sun in the crocus, in the narcissus, in the heliotrope, in the rooster, in the lion.

As quoted in Elements of Pantheism (2004) by Paul A. Harrison : La cena de le ceneri (1584)

The universal Intellect is the intimate, most real, peculiar and powerful part of the soul of the world. This is the single whole which filleth the whole, illumineth the universe and directeth nature to the production of natural things, as our intellect with the congruous production of natural kinds.

We find that everything that makes up difference and number is pure accident, pure show, pure constitution. Every production, of whatever kind, is an alteration, but the substance remains always the same, because it is only one, one divine immortal being.