In science, laws of the universe are regulatory equations, statements, or governing principles that are deemed to hold true in any part of the known universe or regions of space discernible to observation. One the first to make statements of two laws of the universe was German physicist Rudolf Clausius who in 1865 stated: [1]

“If for the entire universe we conceive the same magnitude to be determined, consistently and with due regard to all circumstances, which for a single body I have called entropy, and if at the same time we introduce the other and simpler conception of energy, we may express in the following manner the fundamental laws of the universe which correspond to the two fundamental theorems of the mechanical theory of heat: (a) The energy of the universe is constant, (b) The entropy of the universe tends to a maximum.”

See also
Laws of affinity
Laws of human thermodynamics
Laws of life
Laws of thermodynamics

1. (a) Clausius, Rudolf. (1865). “On Several Convenient Forms of the Fundamental Equations of the Mechanical Theory of Heat”, Read at the Philosophical Society of Zurich on the 24th of April, 1865, published in the Vierteljahrsschrift of this society, Bd. x. S. 1.; Pogg. Ann. July, 1865, Bd. cxxv. S. 353; Journ. de Liouville, 2e ser. t. x. p. 361.
(b) Clausius, Rudolf. (1867). The Mechanical Theory of Heat – with its Applications to the Steam Engine and to Physical Properties of Bodies, (pg. 365), (URL). London: John van Voorst, 1 Paternoster Row. MDCCCLXVII.

Further reading
● Atkins, Peter. (2007). Four Laws - that Drive the Universe. Oxford: Oxford University Press.
● Penrose, Roger. (2005). The Road to Reality: A Complete Guide to the Laws of the Universe, (ch. 27: The Big Bang and its Thermodynamic Legacy, pgs. 686-734). New York: Alfred A. Knopf.

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