Mother Nature has simple rules to follow
Nothing can we ever lose, steal or borrow
Water flows downhill to the thalweg of the valley
And an atom is a machine that does not ever dally.
Nature’s laws are clean without double entendre
No persnickety lawyers claiming her wrongful
Her decrees are the closest to truth that we can find
Inconsistencies can only be found within your mind

(Noun — a line connecting the lowest points of successive cross-sections along the course of a valley or river.)