What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.

Each individual fact, taken by itself, can indeed arouse our curiosity or our astonishment, or be useful to us in its practical applications.

The older view of the nature of heat was that it is a substance, very fine and imponderable indeed, but indestructible, and unchangeable in quantity, which is an essential fundamental property of all matter.

I then endeavoured to show that it is more especially in the thorough conformity with law which natural phenomena and natural products exhibit, and in the comparative ease with which laws can be stated, that this difference exists.

Windmills, which are used in the great plains of Holland and North Germany to supply the want of falling water, afford another instance of the action of velocity. The sails are driven by air in motion - by wind.

Heat can also be produced by the impact of imperfectly elastic bodies as well as by friction. This is the case, for instance, when we produce fire by striking flint against steel, or when an iron bar is worked for some time by powerful blows of the hammer.

The law in question asserts, that the quantity of force which can be brought into action in the whole of Nature is unchangeable, and can neither be increased nor diminished.

Now, the external work of man is of the most varied kind as regards the force or ease, the form and rapidity, of the motions used on it, and the kind of work produced.

Iron which is brought near a spiral of copper wire, traversed by an electrical current, becomes magnetic, and then attracts other pieces of iron, or a suitably placed steel magnet.

Reason we call that faculty innate in us of discovering laws and applying them with thought.

What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.

You all know how powerful and varied are the effects of which steam engines are capable; with them has really begun the great development of industry which has characterised our century before all others.

A raised weight can produce work, but in doing so it must necessarily sink from its height, and, when it has fallen as deep as it can fall, its gravity remains as before, but it can no longer do work.

A moving body whose motion was not retarded by any resisting force would continue to move to all eternity.

But heat can also be produced by the friction of liquids, in which there could be no question of changes in structure, or of the liberation of latent heat.

Not that I wish by any means to deny, that the mental life of individuals and peoples is also in conformity with law, as is the object of philosophical, philological, historical, moral, and social sciences to establish.

A metaphysical conclusion is either a false conclusion or a concealed experimental conclusion.

But heat can also be produced by the friction of liquids in which there could be no question of changes in structure or of the liberation of latent heat.

Socialism proposes no adequate substitute for the motive of enlightened selfishness that today is at the basis of all human labor and effort, enterprise and new activity.

He is the best sailor who can steer within fewest points of the wind, and exact a motive power out of the greatest obstacles.

Just because scientists have the knowledge to do it, the technology to do it, and some may even have a financial motive or other incentive to do it, does not make it right.

No game in the world is as tidy and dramatically neat as baseball, with cause and effect, crime and punishment, motive and result, so cleanly defined.

Every man without passions has within him no principle of action, nor motive to act.

I think the motive is to establish in federal law the personhood from conception forward and try and alter the Constitution through statute.

It is futile to judge a kind deed by its motives. Kindness can become its own motive. We are made kind by being kind.

Cruelty, like every other vice, requires no motive outside of itself; it only requires opportunity.

From a moral point of view, there is no excuse for terrorist acts, regardless of the motive or the situation under which they are carried out.

Because impudence is a vice, it does not follow that modesty is a virtue; it is built upon shame, a passion in our nature, and may be either good or bad according to the actions performed from that motive.

America - a great social and economic experiment, noble in motive and far-reaching in purpose.

If interstellar travel is as time- or energy- demanding as the above figures indicate, it is far from obvious what the motive for colonization might be.

The motive power of democracy is love.

Do not ever say that the desire to "do good" by force is a good motive. Neither power-lust nor stupidity are good motives.

I really have no ulterior motive in taking on certain roles. I have no larger issue that I really want to show people. I'm an actor, that's all. I just do what I do.

In my opinion, the form of Government may be different in different countries, according to their circumstances, their wishes, their wants. England loves her Queen, and has full motive to do so.

Some people are born with a vital and responsive energy. It not only enables them to keep abreast of the times; it qualifies them to furnish in their own personality a good bit of the motive power to the mad pace.

I, Alexander B. Campbell, make this statement of the cause of my death to relieve the coroner of the necessity of an inquest, and also let my friends know the motive that led me to take my own life.

Few men could explain why they enlisted, and if they attempted they might only prove that they had done as a politician said the electorate does, the right thing from the wrong motive.

In morals what begins in fear usually ends in wickedness; in religion what begins in fear usually ends in fanaticism. Fear, either as a principle or a motive, is the beginning of all evil.

We want deeper sincerity of motive, a greater courage in speech and earnestness in action.

It's motive alone which gives character to the actions of men.

My great crime in the world is blunder I will get into scrapes without intention or any bad motive.

We acknowledge but one motive - to follow the truth as we know it, whithersoever it may lead us; but in our heart of hearts we are well assured that the truth which has made us free, will in the end make us glad also.

When the severity of the law is to be softened, let pity, not bribes, be the motive.

How to gain, how to keep, how to recover happiness is in fact for most men at all times the secret motive of all they do, and of all they are willing to endure.

Turning corporations loose and letting the profit motive run amok is not a prescription for a more livable world.

I first came to think about media and politics in the late 1960s, having observed some distortions up close, but since then I wouldn't say that my personal experience has remained an important motive for my writing about media.

The husband - by primitive instinct partly, certainly by ancient tradition - regards himself as the active partner in matters of love and his own pleasure as legitimately the prime motive for activity.

It is a good motive, fame and money, as it is tangible and measurable. Being an artist is neither measurable nor tangible and certainly not a way to become rich.

What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.