Many have argued that a vacuum does not exist, others claim it exists only with difficulty in spite of the repugnance of nature; I know of no one who claims it easily exists without any resistance from nature.

Is it a surprise that into the vessel, in which the mercury has no inclination and no repugnance, not even the slightest, to being there, it should enter and should rise in a column high enough to make equilibrium with the weight of the external air which forces it up?

We have made many glass vessels... with tubes two cubits long. These were filled with mercury, the open end was closed with the finger, and the tubes were then inverted in a vessel where there was mercury.

Many have argued that a vacuum does not exist, others claim it exists only with difficulty in spite of the repugnance of nature; I know of no one who claims it easily exists without any resistance from nature.

The Geometer has the special privilege to carry out, by abstraction, all constructions by means of the intellect. Who, then, would wish to prevent me from freely considering figures hanging on a balance imagined to be at an infinite distance beyond the confines of the world?

It's the difficulty we had with Mr. Bean, actually, when it went from TV to film. You certainly discover that you need to explain more about a character.

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

The honest truth is that if this government were to propose the massacre of the first-born, it would still have no difficulty in getting it through the Commons.

A lot of these industries are having difficulty finding reliable workers with the skills they require.

Bad company is like a nail driven into a post, which, after the first and second blow, may be drawn out with little difficulty; but being once driven up to the head, the pincers cannot take hold to draw it out, but which can only be done by the destruction of the wood.

I think the biggest difficulty is that when I'm here in America, there's a necessity of using English, so I really have a great sense of really wanting to learn, but unfortunately when I head back to Japan, the necessity vanishes and so does my enthusiasm about learning.

I'm sure that you could go back and make a graph showing that all the killings of black males increased in times of economic difficulty. As a matter of fact, a black man was lynched last year.

Conquering any difficulty always gives one a secret joy, for it means pushing back a boundary-line and adding to one's liberty.

Let there be no illusions about the difficulty of forming this kind of a national community. It's tough, difficult, not easy. But a spirit of harmony will survive in America only if each of us remembers that we share a common destiny.

The accumulation of skill and science which has been directed to diminish the difficulty of producing manufactured goods, has not been beneficial to that country alone in which it is concentrated; distant kingdoms have participated in its advantages.

For example, in painting the form arises from abstract elements of line and color, while in cinema the material concreteness of the image within the frame presents - as an element - the greatest difficulty in manipulation.

The difficulty of literature is not to write, but to write what you mean; not to affect your reader, but to affect him precisely as you wish.

The mind unlearns with difficulty what it has long learned.

I should point out, however, that at first some difficulty was experienced in observing the phenomena predicted by the theory, owing to the extreme smallness of the variations in the period of oscillation.

Perhaps, to the uninformed, it may appear unaccountable that a man should be able to retain in his memory such a variety of learning; but the close alliance with each other, of the different branches of science, will explain the difficulty.

Given the difficulty of resisting such temptations over the longer run, a proper concern for the welfare of congressional souls may well be the ultimate argument in favor of term limitations.

If most people are not willing to see the difficulty, this is mainly because, consciously or unconsciously, they assume that it will be they who will settle these questions for the others, and because they are convinced of their own capacity to do this.

It is a high patriotic duty that we support and sustain the men who have been placed in position of difficulty, burden, responsibility, and even danger as the result of our suffrages.

Give yourself an even greater challenge than the one you are trying to master and you will develop the powers necessary to overcome the original difficulty.

The difficulty with this conversation is that it's very different from most of the ones I've had of late. Which, as I explained, have mostly been with trees.

The difficulty is to try and teach the multitude that something can be true and untrue at the same time.

Little Sparta is a garden in the traditional sense. It is perhaps not like other modern gardens, but I think that other times would have had no difficulty with it.

By no means do I anticipate screening those who come on to campus... And I have no difficulty if a bishop across the country or some local pastor may say that's not Catholic teaching - that's fine.

Surmounting difficulty is the crucible that forms character.

Sports is a metaphor for overcoming obstacles and achieving against great odds. Athletes, in times of difficulty, can be important role models.

I am, really, a great writer; my only difficulty is in finding great readers.

Whatever the medium, there is the difficulty, challenge, fascination and often productive clumsiness of learning a new method: the wonderful puzzles and problems of translating with new materials.

I think one ages and one dates. I tend to have a good deal of difficulty in liking some of the new poets.

I know my own soul, how feeble and puny it is: I know the magnitude of this ministry, and the great difficulty of the work; for more stormy billows vex the soul of the priest than the gales which disturb the sea.

Grace is the absence of everything that indicates pain or difficulty, hesitation or incongruity.

The tax on capital gains directly affects investment decisions, the mobility and flow of risk capital... the ease or difficulty experienced by new ventures in obtaining capital, and thereby the strength and potential for growth in the economy.

What we're seeing early on is Democrats rallying around Al Gore, Republicans rallying around George Bush and the difficulty of anybody else to get any room in the race.

Difficulty, my brethren, is the nurse of greatness - a harsh nurse, who roughly rocks her foster - children into strength and athletic proportion.

Some people carry their hearts in their heads; very many carry their heads in their hearts. The difficulty is to keep them apart, yet both actively working together.

I write for somebody who has my own limitations. My reader has a certain difficulty with concentrating, which in my case comes from being a film viewer.

The Western poet and writer of romance has exactly the same kind of difficulty in comprehending Eastern subjects as you have in comprehending Western subjects.

The pessimist sees difficulty in every opportunity. The optimist sees the opportunity in every difficulty.

And from the first time I picked up a basketball at age eight - I had a lot of difficulty when I first picked up a basketball, because I was a scrub - there were things that I liked about it.

Everyone has talent at twenty-five. The difficulty is to have it at fifty.

A friend is long sought, hardly found, and with difficulty kept.

The great difficulty in education is to get experience out of ideas.

Where there is no choice, we do well to make no difficulty.

The difficulty of IVF or of any fertility issues is the hope and the shattered hope, the dream that it might happen this time and then it doesn't happen.

The complaint of bad pay, and difficulty in obtaining it, is almost generally reiterated through every department of education.