Not far from here where we gather today is a symbol of freedom familiar to all Americans -- the Liberty Bell. When the Declaration of Independence was first read in public, the Liberty Bell was sounded in celebration, and a witness said: "It rang as if it meant something."
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.
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.
Men often become what they believe themselves to be. If I believe I cannot do something,it makes me incapable of doing it. When I believe I can,I acquire the ability to do it even if I didn’t have it in the beginning.’"Mahatma Gandhi