Las palabras se las lleva el viento - that is the correct sentence in Spanish (The words are taken by the wind) which means, bad things that people say are easily forgettable most of the times.
The author of this sentence is not exactly specified because many others have used this same sentence in different ways, making it difficult to find the original one. Some believe it was written by Carlos Mateo.
Hope it helped,
Happy homework/ study/ exam!