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

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.

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.

If God wanted us to get high, he'd have created plants that became psychoactive when eaten or smoked.

We are artists. When we can’t find the beauty, we create it.

Loving is half of believing.

Any casual observer can tell at a glance I'm not the person I think I am.

Believing is half the cure.

I sat behind Thurman Thomas for my first couple of years, then my first year starting I won the Heisman. After I won the Heisman, that’s when things changed as far as going to the NFL.

One is not superior merely because one sees the world as odious.

The more we touch the intimate love of God which creates, sustains, and guides us, the more we recognize the multitude of fruits that come forth from that love.

A man is first reverent about himself, and self-respect is the first stage in reverence for all things.

It's important in life to conclude things properly. Only then can you let go. Otherwise you are left with words you should have said but never did, and your heart is heavy with remorse.