I think mistakes are the essence of science and law. It's impossible to conceive of either scientific progress or legal progress without understanding the important role of being wrong and of mistakes.
The secret of health for both mind and body is not to mourn for the past, nor to worry about the future, but to live the present moment wisely and earnestly. There are only two mistakes one can make along the road to truth; not going all the way, and not starting.
The problem comes up because we ask the question in the wrong way. We supposed that solids were one thing and space quite another, or just nothing whatever. Then it appeared that space was no mere nothing, because solids couldn't do without it. But the mistake in the beginning was to think of solids and space as two different things, instead of as two aspects of the same thing. The point is that they are different but inseparable, like the front end and the rear end of a cat. Cut them apart, and the cat dies.
If, in the course of a thousand or two thousand years, science arrives at the necessity of renewing its points of view, that will not mean that science is a liar. Science cannot lie, for it's always striving, according to the momentary state of knowledge, to deduce what is true. When it makes a mistake, it does so in good faith. It's Christianity that's the liar. It's in perpetual conflict with itself.
We're not going to deputize a whole bunch of American citizens to start grabbing people or turning them in, in part because the ordinary American citizen may not know whether or not this person is illegal or not. But, you know, the notion that we're going to criminalize priests, for example, or doctors who are providing services to individuals, and throw them in jail for doing what their calling asks them to do, which is to provide help and service to people in need, I think that is a mistake. I think that's out of America's character.
I believe that we will succeed in Iraq, because, one, the Iraqis want to live in a free society. And, two, that the Iraqis want to take the fight to the enemy. And people want me to put a timetable on things; that's a huge mistake. Putting a timetable on this - on our stay there in Iraq simply emboldens the enemy and discourages our friends.
History will look back, and I'm fully prepared to accept any mistakes that history judges to my administration, because the president makes the decisions, the president has to take the responsibility.
We who are living in the west today are fortunate. Freedom has been bequeathed to us. We have not had to carve it out of nothing; we have not had to pay for it with our lives. But it would be a grave mistake to think that freedom requires nothing of us. Each of us has to earn freedom anew in order to possess it. We do so not just for our own sake, but for the sake of our children, so that they may build a better future that will sustain over the world the responsibilities and blessings of freedom.
The whole modern world has divided itself into Conservatives and Progressives. The business of Progressives is to go on making mistakes. The business of Conservatives is to prevent mistakes from being corrected.
I have heard of that idea [i.e., of Haile Selassie being the reincarnation of Jesus Christ]. I also met certain Rastafarians. I told them clearly that I am a man, that I am mortal, and that...they should never make a mistake in assuming or pretending that the human being is emanated from a deity.
All this struggling and striving to make the world better is a great mistake. Not that it's wrong to try to improve the world if you know how but simply because struggling and striving are the worst possible ways to go about doing anything!
When a really new product comes along, it's almost always a mistake to hang a well-known name on it. The reason is obvious. A well-known name got well-known because it stood for something. It occupies a position in the prospect's mind. A really well-known name sits on the top rung of a sharply defined ladder. The new product, if it's going to be successful, is going to require a new name. New ladder, new name. It's as simple as that.