I'd rather live as an optimist with some doubt than a pessimist without hope.

Doubt is a good moment to start thinking with your heart and feeling with your head.

Everything lasts forever, whether it stays with you or not.

If you know the right answers long enough people wont notice when you make up the ones you don't.

I've never been more hopeful about our future. I have never been more hopeful about America. And I ask you to sustain that hope. I'm not talking about blind optimism, the kind of hope that just ignores the enormity of the tasks ahead or the roadblocks that stand in our path. I'm not talking about the wishful idealism that allows us to just sit on the sidelines or shirk from a fight. I have always believed that hope is that stubborn thing inside us that insists, despite all the evidence to the contrary, that something better awaits us so long as we have the courage to keep reaching, to keep working, to keep fighting.

Some people are optimists. Some people are pessimists. I'm just a realist who believes that some things are worth fighting for.