Trust involves risk, and is always dangerous. Depending on others leaves you vulnerable. But defensively assuming the worst in people will only bring out the worst in them. You have to be an optimist to trust someone.

I think my problem is this
I’m dreaming away
I wonder if heroes truly exist
I cry, watching the day
I’m a fool in so many ways
But to lose all my senses
That ‘s just so typically me

Lyric from Britney Spears, Oops! I Did It Again
(Vocalist Laura Tsaggaris offers a great cover of this song as a free download on her website.)

I have great faith in fools- my friends call it self-confidence.
Quotation from Edgar Allan Poe