Don't ever forget that you're a citizen of this world, and there are things you can do to lift the human spirit, things that are easy, things that are free, things that you can do every day: civility, respect, kindness, character.
Faith is harder to shake than knowledge, love succumbs less to change than respect, hate is more enduring than aversion, and the impetus to the mightiest upheavals on this earth has at all times consisted less in a scientific knowledge dominating the masses than in a fanaticism which inspired them and sometimes in a hysteria which drove them forward.
Whoever would be a teacher of men let him begin by teaching himself before teaching others; and let him teach by example before teaching by word. For he who teaches himself and rectifies his own ways is more deserving of respect and reverence than he who would teach others and rectify their ways.