Nothing in life is certain except death, taxes and the second law of thermodynamics.

In this world nothing can be said to be certain, except death and taxes.

Nothing is certain in life but death and taxes. And in Donald Trump's case, lies.

The algebraic sum of all the transformations occurring in a cyclical process can only be positive, or, as an extreme case, equal to nothing.

[Statement of the second law of thermodynamics, 1862]

Nothing in life is promised except death.

Software is like entropy. It is difficult to grasp, weighs nothing, and obeys the second law of thermodynamics; i.e. it always increases.