It is not that we propose a theory and Nature may shout NO; rather, we propose a maze of theories, and Nature may shout INCONSISTENT.

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.

Once you transcend the illusions you will discover that — you — are the most thrilling experience you will ever have.

I am not a long-run actor. I admire actors who can do that.

The love of God toward you is like the Amazon River flowing down to water a single daisy.

The whole duty of man is summed up in obedience to God's will.

Learn how to enjoy where you are on the way to where you're going.

The love is what's left at the end because it's the bedrock, fundamental reality that gets hidden all the time, but never really goes away.

Differences of power are always manifested in asymmetrical access.

I consider the television set as the American fireplace, around which the whole family will gather.

The basic philosophy of stoicism is that you have nothing real external to your own consciousness, that the only thing real is in fact your consciousness.

The Enemy has been here in the night of our natural ignorance, and sown the tares of spiritual errors.