True human progress, that which can be linked to evolution, and which prolongs it, can only consist in perfecting and ameliorating man… — Dr Carl Sagan Copy Share Image
The Universe forces those who live in it to understand it. Those creatures who find everyday experience a muddled jumble of events with no… — Dr Carl Sagan Copy Share Image
There are many hypotheses in science which are wrong. That's perfectly all right; they're the aperture to finding out what's right. Science is a… — Dr Carl Sagan Copy Share Image
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken', and then they would actually… — Dr Carl Sagan Copy Share Image
A galaxy is composed of gas and dust and stars - -billions upon billions of stars — Dr Carl Sagan Copy Share Image
Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgment, the manner in which information… — Dr Carl Sagan Copy Share Image
... the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well,… — Dr Carl Sagan Copy Share Image
For most of human history we have searched for our place in the cosmos. Who are we? What are we? We find that we… — Dr Carl Sagan Copy Share Image
True human progress, that which can be linked to evolution, and which prolongs it, can only consist in perfecting and ameliorating man himself and… — Dr Carl Sagan Copy Share Image
