All significant breakthroughs are break -“withs” old ways of thinking.

The answers you get depend upon the questions you ask.

What a man sees depends both upon what he looks at and also upon what his previous visual-conceptual experience has taught him to see.

We see the world in terms of our theories.

Far from being magisterial in its objectivity, science was conditioned by history, society, and the prejudices of scientists.

Philosophers of science have repeatedly demonstrated that more than one theoretical construction can always be placed upon a given collection of data.

In science novelty emerges only with difficulty, manifested by resistance, against a background provided by expectation.

Probably, the single most prevalent claim advanced by the proponents of a new paradigm is that they can solve the problems that led the old one to a crisis.

Normal science does not aim at novelties of fact or theory and, when successful, finds none.

Almost always the men who achieve these fundamental inventions of a new paradigm have been either very young or very new to the field whose paradigm they change.

Rather than being an interpreter, the scientist who embraces a new paradigm is like the man wearing inverting lenses.

Then what is the purpose of the Library?" Vale asked."To save books, " Irene said firmly.

The anti-mind is the anti-life.

Many people will never read a Bible, but they will read you.

Read my little fable: He that runs may read. Most can raise the flowers now, For all have got the seed.

I don't think women outlive men, Doctor. It only seems longer.

Often a man can play the helpless child in front of a woman, but he can almost never bring it off when he feels most like a helpless child.

By providing outstanding economic leadership, this country can wage its attack successfully - and can thereby build the foundations of a peaceful world.

The bedfellows politics made are never strange. It only seems that way to those who have not watched the courtship.

I could have possibly beaten Senator McCain in the primary. Then I could have been the candidate who lost to Barack Obama.

It takes far less energy to move from first-rate performance to excellence than it does to move from incompetence to mediocrity.