A Quote by Paul Erdos

When I was a child, the Earth was said to be two billion years old. Now scientists say it's four and a half billion. So that makes me two and a half billion.

Paul Erdos

Quote Topics

Billion Child Earth Four Half Makes Me Now Old Said Say Scientists Two Years

Quote Author

Paul Erdos
Hungarian - Mathematician
March 26, 1913 - September 20, 1996

If we could magically transport ourselves back to the young Earth, when it was only a billion years old or two billion years old or three billion years old or four billion years old, we wouldn't be able to survive. We would have a hard time surviving if we were transported to the time when dinosaurs were around.

Sylvia Earle

Our planet has been around only for four and a half billion years. Let's imagine a planet that has life on it such as life is on Earth and it's seven billion years old. Let's say that planet evolved intelligence. Well, that intelligence would be way more advanced than what we call intelligence here on Earth. How long has intelligence been around on Earth as we've come to define it?

Neil deGrasse Tyson

There are 6.6 billion people on the planet today. With organic farming we could only feed four billion of them. Which two billion would volunteer to die?

Norman Borlaug

One in 200 stars has habitable Earth-like planets surrounding it - in the galaxy, half a billion stars have Earth-like planets going around them - that's huge, half a billion. So when we look at the night sky, it makes sense that someone is looking back at us.

Michio Kaku

The universe is eight billion years old, the last two billion of which have produced intelligent life. During this time not one hour of absolute equity has prevailed.

Jack Vance

When I was born, the world's population was 3.5 billion. There are now 6.8 billion people on the planet. By 2050, that's expected to rise to 9.4 billion. What's more, the Earth's resources aren't growing; they're decreasing - and rapidly.

Lewis Gordon Pugh

All indications are that three and a half billion years ago, Mars looked like Earth. It had lakes. It had rivers. It had river deltas. It had snow-capped peaks and puffy clouds and blue sky. Three and a half billion years ago, it was a happening place. The same time on Earth, that's when life started. So did life start on Mars?

John M. Grunsfeld

Cisco projects that in 2020, now just five years away, there will be seven billion people on the earth and 50 billion devices connected to the Internet. Six-and-a-half devices on average per person. As a father of five young adults and teenagers, I think we are - in my household, we've exceeded the 6.5 number.

James Comey

To have six billion people on Earth, two billion of whom are carrying around a warped view of you? That has to register.

James Toback

I'm sitting with six and a half billion dollars we're going to use to close the Mars-Wrigley deal on October 6. I've got to hand over that six and a half billion on October 6. Now, I have to be very careful about who I leave it in between now and then, because they're expecting that he show up.

Warren Buffett

Right now we have a $600-billion or so Defense Department budget, but when you add in, for example, a trillion-dollar nuclear weapons program over the next decade or two, it adds significantly to it. So it's somewhere around $600 billion. We call for approximately cutting that in half and instead putting those dollars into true security here at home.

Jill Stein

Consider: Life arose on Earth close to four billion years ago. Four billion years of slithering, swimming, and soaring life forms. But only in the last 200 thousand years has a species arisen that can fathom the laws of nature and build hardware able to signal its presence.

Seth Shostak

You could be worth $2 billion today and a half a billion tomorrow. It doesn't take much for this to disappear overnight.

Patrice Motsepe

Our galaxy is 10 billion years old. The Earth is only 4.5 billion years old. We are a firefly flicker in the great astrobiology of the galaxy.

Geoffrey Marcy

I never said it. Honest. Oh, I said there are maybe 100 billion galaxies and 10 billion trillion stars. It's hard to talk about the Cosmos without using big numbers. I said "billion" many times on the Cosmos television series, which was seen by a great many people. But I never said "billions and billions." For one thing, it's too imprecise. How many billions are "billions and billions"? A few billion? Twenty billion? A hundred billion? "Billions and billions" is pretty vague. When we reconfigured and updated the series, I checked-and sure enough, I never said it.