Some scientists believe climate change is the cause of unprecedented melting of the North Pole, and that effects these very uncertain weather patterns. I think we should listen to those scientists and experts.

Earth might one day soon resemble the planet Venus.

I set up situations that involve abandoning control and finding out what happens.

When God sneezed, I didn’t know what to say.

It is in the admission of ignorance and the admission of uncertainty that there is a hope for the continuous motion of human beings in some direction that doesn’t get confined, permanently blocked, as it has so many times before in various periods in the history of man.

People are going to buy cheap fertilizer so they can grow enough crops to feed themselves, which will be increasingly difficult with climate change.

Though men determine, the gods doo dispose: and oft times many things fall out betweene the cup and the lip.

It’s not easy being young. It’s hard to know what to do.

There is no hope unmingled with fear, and no fear unmingled with hope.

The squandering of oil and gas is associated with one of the greatest tragedies, not in the least resolved, which is suffered by humankind: climate change.

One can never know for sure what a deserted area looks like.

We know what we are, but know not what we may be.

My comedy is different every time I do it. I don’t know what the hell I’m doing.

If you aren’t in the moment, you are either looking forward to uncertainty, or back to pain and regret.

I want to use my position of leadership to help move along at a faster pace what I believe and know the Obama administration wants to do around the urgency of climate change.

We are afraid to care too much, for fear that the other person does not care at all.

Life’s short. Anything could happen, and it usually does, so there is no point in sitting around thinking about all the ifs, ands and buts.

I believe the most solemn duty of the American president is to protect the American people. If America shows uncertainty and weakness in this decade, the world will drift toward tragedy. This will not happen on my watch.

Vulnerability is basically uncertainty, risk, and emotional exposure.

Faith keeps many doubts in her pay. If I could not doubt, I should not believe.

I did used to have nightmares about the idea that when I die, there is a spark of consciousness which basically creates the world. ‚Is the world going to disappear if this spark of consciousness disappears? And how do I know it won’t? How do I know there’s anything there except what I’m conscious of?‘

Now, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it’s about 20 tons. For people in poor countries, it’s less than one ton. It’s an average of about five tons for everyone on the planet. And, somehow, we have to make changes that will bring that down to zero.

Being at ease with not knowing is crucial for answers to come to you.

The main message we want to get out there is that climate change is caused by the rotten economic system.

I think that once you fully understand the climate and ecological emergencies, then you know what you can do as well. And, of course, there’s a lot of things you can do in your everyday life, but we cannot be focusing on these individual things you can do. We have to see the full picture.

I think my message to the politicians who have within their power the ability to make change is, ‚Do you really, really not care about the future of your great-grandchildren? Because if we let the world continue to be destroyed the way we are now, what’s the world going to be like for your great-grandchildren?‘

There are as many opinions as there are experts.

Ironically, parenting is a shame and judgment minefield precisely because most of us are wading through uncertainty and self-doubt when it comes to raising our children.

Economic medicine that was previously meted out by the cupful has recently been dispensed by the barrel. These once unthinkable dosages will almost certainly bring on unwelcome after-effects. Their precise nature is anyone’s guess, though one likely consequence is an onslaught of inflation.

Success isn’t supposed to happen, no matter how hard you work. There’s no guarantee you’re going to succeed. There’s nothing set in stone.

The first two games for Churchill, I was so jittery that I didn’t know what to do. I was running more but didn’t know what to do. I’ve no bones accepting the fact that I didn’t know what was happening in the game.

Our lifelong certainties about the world can be demolished in a single second.

First, how do we give everyone a fair shot at opportunity and security in this new economy? Second, how do we make technology work for us, and not against us – especially when it comes to solving urgent challenges like climate change? Third, how do we keep America safe and lead the world without becoming its policeman?

There is a time for departure even when there’s no certain place to go.

Either he’s dead or my watch has stopped.

For my part I know nothing with any certainty, but the sight of the stars makes me dream.

I don’t like to commit myself about heaven and hell – you see, I have friends in both places.

The thing that’s made me open my eyes to what was happening to the environment and climate was films and documentaries.

No one can possibly know what is about to happen: it is happening, each time, for the first time, for the only time.

Nothing in life is promised except death.

God not only plays dice, He also sometimes throws the dice where they cannot be seen.

We are ready for any unforeseen event that may or may not occur.

No great deed is done by falterers who ask for certainty.

I am no longer sure of anything. If I satiate my desires, I sin but I deliver myself from them; if I refuse to satisfy them, they infect the whole soul.

From the time I was a kid, I always knew something was going to happen to me. Didn’t know exactly what.

It’s so hard to know what to do when one wishes earnestly to do right.

At Virgin, we have always backed the power of the entrepreneur and inventor to find solutions to tricky problems. Why should climate change and the battle against carbon be any different?

The reason we should do a carbon tax is because it’s the right thing to do. It’s economics 101, elementary stuff.

Often, I can scarcely hear any one speaking to me; the tones yes, but not the actual words; yet as soon as any one shouts, it is unbearable. What will come of all this, heaven only knows!

Would you bet your paycheck on a weather forecast for tomorrow? If not, then why should this country bet billions on global warming predictions that have even less foundation?

I really want to love somebody. I do. I just don’t know if it’s possible forever and ever.

It is only by risking our persons from one hour to another that we live at all. And often enough our faith beforehand in an uncertified result is the only thing that makes the result come true.

Remember that life’s big changes rarely give advance warning.

One is never afraid of the unknown; one is afraid of the known coming to an end.

In such a porcelain life, one likes to be sure that all is well lest one stumble upon one’s hopes in a pile of broken crockery.

Doing what’s right isn’t the problem. It is knowing what’s right.

As you heat the planet up, it’s just like boiling a pot.

Prepare for the unknown by studying how others in the past have coped with the unforeseeable and the unpredictable.

Most of the time I spend when I get up in the morning is trying to figure out what is going to happen.

Scientists have become the bearers of the torch of discovery in our quest for knowledge.

The most savage controversies are about matters as to which there is no good evidence either way.