The exploration of space is the next frontier. Astronomy has been a big part of my life since my dad showed me the stars through his telescope in the back garden when I was a child. General scientific knowledge has also done so much for my own understanding, and for the world at large.  People who understand science are less likely to be fooled by false ideas, and therefore more likely to make good decisions. I think the world is better off if more people are engaged in science, and when more of the public have a basic scientific understanding.

I love it when young people are full of questions and curiosity about the given topic - in their search for further understanding, they are displaying the skills of budding young scientists with their thirst for knowledge. Answering questions for an engaged audience - even if they go way off topic, is always more fun than lecturing to a quiet crowd.

Do not be intimidated by difficult subjects in school, especially math and science.

"Difficult" just means it takes more work to understand initially. Don't give up if you don't understand a concept at first - given enough time it becomes easy, even the stuff that seems impossible at first. It's just a matter of practice! We too often give up on difficult subjects, not understanding that we were so close to grasping them. Be patient with yourself!

Marcus Aurelius, the last of the “good emperors” of Rome. Imagine being the richest and most powerful man in the world, but choosing to be humble, self-restrained and virtuous. Though I would need both a medium and a translator.