If It Disagrees With Experiment, It's Wrong.

To Guess What To Keep And What To Throw Away Takes Considerable Skill. Actually It Is Probably Merely A Matter Of Luck, But It Looks As If It Takes Considerable Skill.

Turbulence Is The Most Important Unsolved Problem Of Classical Physics.

Only Realistic Flight Schedules Should Be Proposed, Schedules That Have A Reasonable Chance Of Being Met. If In This Way The Government Would Not Support Them, Then So Be It. Nasa Owes It To The Citizens From Whom It Asks Support To Be Frank, Honest, And Informative.

It Is Impossible, By The Way, When Picking One Example Of Anything, To Avoid Picking One Which Is Atypical In Some Sense.

Science Alone Of All The Subjects Contains Within Itself The Lesson Of The Danger Of Belief In The Infallibility Of The Greatest Teachers Of The Preceding Generation.