The First Law of Thermodynamics (Conservation) states that energy is always conserved, it cannot be created or destroyed. In essence, energy can be converted from one form into another.
The third law of thermodynamics states that the entropy of a system at absolute zero is a well-defined constant.
The Second Law of Thermodynamics says that processes that involve the transfer or conversion of heat energy are irreversible
The fourth law of thermodynamics is the conservation of time
