Science is perhaps the only human activity in which errors are systematically criticized and, in time, corrected.

True ignorance is not the absence of knowledge, but the refusal to acquire it.

The growth of knowledge depends entirely upon disagreement.

In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

If you can't say it simply and clearly, keep quiet, and keep working on it till you can.

The best thing that can happen to a human being us to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.

Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride, or laziness of mind.

A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.

I may be wrong and you may be right, and by an effort, we may get nearer to the truth

The attempt to make heaven on earth invariably produces hell.

Novelty has a way of intensifying memory. The less often you do something, the deeper the memory burrows in.

There exist no new mistakes anywhere. The same mistakes people committed are the same mistakes people are committing and the same mistakes shall people commit

All theory, dear friend, is gray, but the golden tree of life springs ever green.

I happen to be a huge 'Lord of the Rings' fan. I do an annual marathon of the extended editions.

Hitting at the top of the order is a good thing. You get more at-bats. I'm excited to see how this develops.

Poverty ... It is life near the bone, where it is sweetest.

Growing up in a violent home is a terrifying and traumatic experience that can affect every aspect of a child's life, growth, and development.

Let us never yield to pessimism, to that bitterness that the devil offers us every day.

Winners aren't popular, losers often are.