20th century Quote by Paul Levinson

I believe that the long-term future of the human race must be space and that it represents an important life insurance for our future…

— Stephen Hawking

We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.

— Stephen Hawking

We need a continuing presence in space.

— Alan Shepard

We must still think of ourselves as pioneers to understand the importance of space.

— Buzz Aldrin

Now, more than ever, we need people in space... The events of September 11 show us how vulnerable we and our civilization are down…

— Paul Levinson

Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because…

— Carl Sagan

It's vital as we postulate and work toward exploration and human settlement beyond Earth. I like to think of the possibilities of sustaining humanity's…

— Vanna Bonta

That has been a very strong message, and I feel that is going to continue, but there is a shift coming and they bring…

— Christine McCormick Day

Since, in the long run, every planetary society will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring —…

— Carl Sagan

“The size and age of the Cosmos are beyond ordinary human understanding. Lost somewhere between immensity and eternity is our tiny planetary home. In…

— Carl Sagan

We who are alive at this moment are only an infinitesimal part of something that has existed for eternity and will continue when there…

— Liv Ullmann

The opening of space to human development and settlement is the most important activity of the human species. From hope to health, from wonder…

— Rick Tumlinson