In theory, there is no difference between theory and practice. But, in practice, there is.

In theory, there is no difference between theory and practice. But, in practice, there is.

Sometimes a scream is better than a thesis.

A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant.

A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.

Be where the acting is. I live in Houston. Dallas is 4 1/2 hours away. I let them know there's no difference.

Well concerning the world records that I did, I think it helps a lot to me, yeah. I think it's a very individual thing because I heard some people say, like, oh I don't like it at all. But I definitely, for me it really made a big difference.

There are many experiments and a great deal of research that can be performed on the station that make a difference in our lives and we are committed to supporting this important vocation.

We started filming in 1993 which was only four years after the fall of communism. The difference in Budapest over the last five years has been remarkable.

The difference between talking on your cell phone while driving and speaking with a passenger is huge. The person on the other end of the cell phone is chattering away, oblivious.

What the hell difference does it make, left or right? There were good men lost on both sides.

The difference between a bad artist and a good one is: the bad artist seems to copy a great deal; the good one really does.

I was grateful for the opportunity to make a difference. The political violence really started in 1970-1971. The political difficulties start a little bit beyond that.

I think the human body is beautiful, and I don't really have a huge problem in dealing with it, but it's the context, the environment and what I feel about it that that makes the difference for me.

From my very first day in the Mayor's office, I have worked closely with the Council members who share our vision of a city hall that really protects taxpayers and cares... yes... about the little things that make a big difference in people's lives.

I never considered a difference of opinion in politics, in religion, in philosophy, as cause for withdrawing from a friend.

All this is applicable to the intellectual faculties of man. There is a considerable difference between one person and another as regards these faculties, as is well known to philosophers.

I love those hockey moms. You know what they say the difference between a hockey mom and a pit bull is? Lipstick.

The difference between style and fashion is quality.

I used to think that it didn't make any difference how far you ran if you had a good, strong musculoskeletal system and no underlying cardiovascular problems.

The difference between relief pitching when I did it today is simple, there is too much of it. It's one of those cases where more is not necessarily better.

It makes no difference if I burn my bridges behind me - I never retreat.

It is important to nurture any new ideas and initiatives which can make a difference for Africa.

The difference between literature and journalism is that journalism is unreadable and literature is not read.

Do not confuse beauty with beautiful. Beautiful is a human judgment. Beauty is All. The difference is everything.

We must remember that one determined person can make a significant difference, and that a small group of determined people can change the course of history.

It don't make no difference where I go or what happens, so long as I can play the full nine.

We are all Adam's children - it's just the skin that makes all the difference.

I had to tell about my colonic, which expresses the fact why I'm so neat today as opposed to a few years ago. I never knew that the weight made that much difference.

I've always swung the same way. The difference is when I swing and miss, people say, 'He's swinging for the fences.' But when I swing and make contact people say, 'That's a nice swing.' But there's no difference, it's the same swing.

All of us want to have meaning in our lives and want to feel like we're doing something that makes a difference. I believe we're doing that in the Justice Department.

Once the Afghan people vote and they choose their President with direct, secret ballot from all over the country, there will be a lot of difference in this country and a lot of legitimate power to flow with implementation.

It's not what you've got, it's what you use that makes a difference.

Example moves the world more than doctrine. The great exemplars are the poets of action, and it makes little difference whether they be forces for good or forces for evil.

The difference between something good and something great is attention to detail.

There is hardly such a thing as a war in which it makes no difference who wins. Nearly always one side stands more of less for progress, the other side more or less for reaction.

It makes a difference what we choose to experience during sleep. Many of us think of sleep as a chance to get away from it all. But sleep is also a chance to return to the joys of our spiritual heritage - our universal awareness.

There is a real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

There is a difference between a military mission and the aspiration for the long-term plans for the country. What we want is a stable enough Afghanistan, able to look after its own security so we can leave without the fear of it imploding... But let's be clear - it's not going to be perfect.

The difference between me and them is that I'll look at Jesse Jackson and I'll see four Jesse Jacksons, and they'll just see one, the clown ambulance chaser.

What's interesting is that both men and women are struggling with this issue in remarkably similar percentages, but the big difference is that women tend to talk about this when men keep it silent.

The failure of academic feminists to recognize difference as a crucial strength is a failure to reach beyond the first patriarchal lesson. In our world, divide and conquer must become define and empower.

The most considerable difference I note among men is not in their readiness to fall into error, but in their readiness to acknowledge these inevitable lapses.

We love death. The U.S. loves life. That is the difference between us two.

The dog doesn't know the difference between Saturday, Sunday, and Monday, so I have to walk the dog early those days too.

There is an enormous difference between Russia and Western Europe.

Obviously, the difference between a game and actual training is you're using your whole body, so in that sense, maybe not, although maybe something to do with reaction, the speed of reaction, maybe that was of use during the training.

There is a difference between conceit and confidence. Conceit is bragging about yourself. Confidence means you believe you can get the job done.

The difference between people and ideas is... only superficial.