I'm a scientist not a theologian. I don't know if there is a God or not. Religion requires certainty. Revere and respect Gaia. Have trust in Gaia. But not faith.

When prayer removes distrust and doubt and enters the field of mental certainty it becomes faith and the universe is built on faith.

Faith means living with uncertainty - feeling your way through life letting your heart guide you like a lantern in the dark.

Our nation's Social Security Trust Fund is depleting at an alarming rate and failure to implement immediate reforms endangers the ability of Americans to plan for their retirement with the options and certainty they deserve.

Life is full of change and uncertainty. We know this. We experience it on a daily basis.

To counter the avoidance of intellectual challenge and responsibility we must reduce the domination of certainty in education.

If I knew for a certainty that a man was coming to my house with the conscious design of doing me good I should run for my life.

For any culture which is primarily concerned with meaning the study of death - the only certainty that life holds for us - must be central for an understanding of death is the key to liberation in life.

Benjamin Franklin said there were only two things certain in life: death and taxes. But I'd like to add a third certainty: trash. And while some in this room might want to discuss reducing taxes I want to talk about reducing trash.

We are biological creatures. We are born we live we die. There is no transcendent purpose to existence. At best we are creatures of reason and by using reason we can cure ourselves of emotional excess. Purged of both hope and fear we find courage in the face of helplessness insignificance and uncertainty.