Success is not about being the best, it's about being better than you were yesterday.

Coal keeps America competitive in the world.

I don’t think you should spend much time being unhappy about the bad breaks. You get a lot of them, but you also get a lot of good ones. The thing to do is just to maximize your odds of using the good ones and minimizing the effects of the bad ones.

"La memoria es un laberinto donde a veces nos perdemos, pero también donde nos encontramos."