That sometimes clear ... and sometimes vague stuff ... which is ... mathematics.

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.

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.

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.

Boredom like necessity is very often the mother of invention.

What happens is, when I perform, I'm somewhere else. I go back in time and get in touch with who I really am. I forget my troubles, my worries.

Anatoli Tarasov, the guy that created the Soviet style of play, was a visionary. He was a creative thinker. He studied ballet and chess and art and read a lot.

Dancing came easy to me.

To get people to compromise, you have to give them stuff.

A shy failure is nobler than an immodest success.

Jesus has enough, is enough, and will be enough.

The entire world we apprehend through our senses is no more than a tiny fragment in the vastness of Nature.

To preserve the life of citizens, is the greatest virtue in the father of his country.

To be honest, I'm not much of a drinker. It makes me sick, and I hate that.