John McCarthy Quotes

The point is with good maths skills you have just wonderful opportunities and if you don't have good maths skills, there are just so many things that you won't be able to do.

Everybody is entitled to have an opinion. But it is also useful to have some facts.

You are not entitled to your opinion. You are entitled to your informed opinion. No one is entitled to be ignorant.

Not enough of our society is trained how to understand and interpret quantitative information. This activity is a centerpiece of science literacy to which we should all strive-the future health, wealth, and security of our democracy depend on it. Until that is achieved, we are at risk of making under-informed decisions that affect ourselves, our communities, our country, and even the world.

I'm optimistic. I see no longer people accepting fuzzy thinking in the world. The change is not that people aren't still saying under-informed things. The change is that if you're in power and you say something under-informed, there are people out there with a voice who will take you to task for having done so

We have an expression in New York City government - "In God we trust, but for everyone else, bring data." It's so easy to pick up a sound byte and say, "Oh, yeah, yeah, I believe that," without really thinking.

Now is the time for everyone who believes in the rule of reason to speak up against pathological science and its purveyors.

We've been in lots of places that I suppose, by Oxford standards, would be considered illiterate, but everyone's completely conversant with the idea that here is a number, and that number is above it, and that's too high. It's not a very complicated idea.

Without mathematics, we are blind.

Research – and using what you learn from it to analyze every situation – is what separates being unreasonable from being irrational.

Numeracy: 1. The art of putting numbers to things, that is, assigning amounts to variables in order that practical decisions may be reach. 2. That aspect of education (beyond mere literacy) which takes account of quantitative aspects of reality.

We do not respect people's beliefs, we evaluate their reasons. If my reasons are good enough for believing what I believe, you will helplessly believe what I believe. I will give you my reasons and reasons are contagious. That is what it is to be a rational human being.

Rationality is not just something you do so that you can make more money, it is a binding principle. Rationality is a really good idea. You must avoid the nonsense that is conventional in one's own time. It requires developing systems of thought that improve your batting average over time.

You could reason with someone who was halfway educated and appeal to his intelligence, but I felt helpless in the face of utter stupidity.

It is foolish to be convinced without evidence, but it is equally foolish to refuse to be convinced by real evidence.

Knowing where things are, and why, is essential to rational decision making

Part of what it is to be scientifically-literate is how you think about information that's presented in front of you. I think that's the great challenge. You have people who believe they do know how to think about the information, but don't, and they're in the position of power and legislation. You can't base a society on non-objectively verifiable truth. Otherwise, it's a fantasy land and science is the pathway to those emerging truths that are hard-earned and that some have taken decades, if not centuries, to emerge from experiments all around the world.

Be sceptical, ask questions, demand proof. Demand evidence. Don't take anything for granted. But here's the thing: When you get proof, you need to accept the proof. And we're not that good at doing that.

In the age of information, ignorance is a choice.

Conversation with a friend will only bear good fruit of knowledge when both think only of the matter under consideration and forget that they are friends.

The Greeks invented logic but were not fooled by it.

All the problems of the world could be settled easily if men were only willing to think.

By the worldly standards of public life, all scholars in their work are of course oddly virtuous. They do not make wild claims, they do not cheat, they do not try to persuade at any cost, they appeal neither to prejudice nor to authority, they are often frank about their ignorance, their disputes are fairly decorous, they do not confuse what is being argued with race, politics, sex or age, they listen patiently to the young and to the old who both know everything. These are the general virtues of scholarship, and they are peculiarly the virtues of science.

By freethinking I mean the use of the understanding in endeavoring to find out the meaning of any proposition whatsoever, in considering the nature of the evidence for or against, and in judging of it according to the seeming force or weakness of the evidence.

A few drops of science will often disinfect an entire barrel full of ignorance and prejudice.