No experimental result can ever kill a theory: any theory can be saved from counterinstances either by some auxiliary hypothesis or by a suitable reinterpretation of its terms.

Research programmes, besides their negative heuristic, are also characterized by their positive heuristic.

The positive heuristic of the programme saves the scientist from becoming confused by the ocean of anomalies.

Blind commitment to a theory is not an intellectual virtue: it is an intellectual crime.

Intellectual honesty consists in stating the precise conditions under which one will give up one's belief.

The proving power of the intellect or the senses was questioned by the skeptics more than two thousand years ago; but they were browbeaten into confusion by the glory of Newtonian physics.

Philosophy of science without history of science is empty; history of science without philosophy of science is blind.

There is no falsification before the emergence of a better theory.

In degenerating programmes, however, theories are fabricated only in order to accommodate known facts

Belief may be a regrettably unavoidable biological weakness to be kept under the control of criticism: but commitment is for Popper an outright crime.

Indeed, this epistemological theory of the relation between theory and experiment differs sharply from the epistemological theory of naive falsificationism.

We grow the aspects of our lives that we feed – with energy and engagement – and choke off those we deprive of fuel. Your life is what you agree to attend to.

Not every emotion deserves the same attention

doubt is the privilege of those who have lived a long time,

One day you will wake up and there won't be any more time to do the things you've always wanted. Do it now.

In a society that celebrates the inessential, architecture can put up a resistance, counteract the waste of forms and meanings and speak its own language.

You are excrement. You can change yourself into gold.

Wherever you are is always the right place. There is never a need to fix anything, to hitch up the bootstraps of the soul and start at some higher place. Start right where you are.

Novels are very different than films and I love to see someone else's imagining of my story.

I do not like candid pictures. They are so unattractive.

So how's that hopey changey stuff working out for ya?