It serves as an adjunct of the Second Law, the inexorable tendency of the universe, and any isolated system in it, to slide toward a state of increasing disorder. The mixing never reverses itself, even if you wait till the end of the universe, which is why the Second Law is so often said to be the part of physics that makes time a one-way street. The Second Law is one piece of technical bad news from science that has established itself firmly in the nonscientific culture. Everything tends toward disorder. Any process that converts energy from one form o another must lose some as heat.
Perfect efficiency is impossible.
The universe is a one-way street. Entropy must always increase in the universe and in any hypothetical isolated system within it. The above two stanzas from the third canto of the poem are considered especially exemplary of the romantic ideals and style. As his second wife, Captain Byron married Catherine Gordon of Gight, who became Byron's mother. Pursued by creditors, the family moved in 1789 to Aberdeen, where Byron was educated until he was ten.