Success is not about being the best, it's about being the most adaptable.

"A personality is a full congress of orators and pressure groups, of children, demagogues, communists, isolationists, war mongers, mugwumps, grafters, prayer-makers, adventurers and clerks; with each of these in a minority of one."

Poor is the man whose pleasures depend on the permission of another.

I've learned that you can't please everyone, and that's okay.

Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.