Full Idea
The third law of thermodynamics says that a hypothetical state of total order and minimum entropy can be attained only at the absolute zero temperature, minus 273 degrees Celsius.
Gist of Idea
Third Law: total order and minimum entropy only occurs at absolute zero
Source
Frank Close (Theories of Everything [2017], 3 'Arrow')
Book Reference
Close,Frank: 'Theories of Everything' [Profile Books 2017], p.30
A Reaction
If temperature is energetic movement of atoms (or whatever), then obviously zero movement is the coldest it can get. So is absolute zero an energy state, or an absence of energy? I have no idea what 'total order' means.