The best quarries leave no scars, only responsible transitions.

The art of teaching is not to impart knowledge, but to inspire, awaken, and encourage.

We are all responsible for the world we have created, and therefore we must work together to change it.

Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.

The only way to do something in depth is to work hard.