A Robot Must Obey The Orders Given

Science Is A Mechanism, A Way Of Trying To Improve Your Knowledge Of Nature. It's A System For Testing Your Thoughts Against The Universe, And Seeing Whether They Match.

Many A Prophecy, By The Mere Force Of Its Being Believed, Is Transmuted To Fact.

Any Teacher That Can Be Replaced By A Computer Should Be Replaced By A Computer.

All Of A Sudden, Space Isn't Friendly. All Of A Sudden, It's A Place Where People Can Die. . . . Many More People Are Going To Die. But We Can't Explore Space If The Requirement Is That There Be No Casualties; We Can't Do Anything If The Requirement Is That There Be No Casualties.

The Intelligent Man Is Never Bored.