Authors
Topics
Lists
Pictures
Resources
Physical Quotes
500+ Sourced quotes
Source
Report...
And so, supposing that light impinging on a refracting or reflecting ethereal superficies puts it into a vibrating motion, that physical superficies being by the perpetual applause of rays always kept in a vibrating motion, and the ether therein continually expanded and compressed by turns, if a ray of light impinge on it when it is much compressed, I suppose it is then too dense and stiff to let the ray through, and so reflects it; but the rays that impinge on it at other times, when it is either expanded by the interval between two vibrations or not too much compressed and condensed, go through and are refracted.
Isaac Newton
Source
Report...
Physically you are a human being, but mentally you are incomplete. Given that we have this physical human form, we must safeguard our mental capacity for judgment. For that, we cannot take out insurance; the insurance company is within: self-discipline, self-awareness, and a clear realization of the disadvantages of anger and the positive effects of kindness.
Tenzin Gyatso, 14th Dalai Lama
Source
Report...
We are doing everything possible to give labor this new status of social duty and to link it on the one side with the development of a technology which will create the conditions for greater freedom, and on the other side with voluntary work based on a Marxist appreciation of the fact that man truly reaches a full human condition when he produces without being driven by the physical need to sell his labor as a commodity.
Che Guevara
Source
Report...
The morality of an action depends on the motive from which we act. If I fling half a crown to a beggar with intention to break his head and he picks it up and buy victuals with it, the physical effect is good. But with respect to me the action is very wrong.
Samuel Johnson
Source
Report...
When someone admits one and rejects another which is equally in accordance with the appearances, it is clear that he has quitted all physical explanation and descended into myth.
Epicurus
Source
Report...
He who knows others is wise;
He who knows himself is enlightened.
He who conquers others has physical strength.
He who conquers himself is strong.
Lao Tzu
Source
Report...
No fairer destiny could be allotted to any physical theory, than that it should of itself point out the way to the introduction of a more comprehensive theory, in which it lives on as a limiting case.
Albert Einstein
Source
Report...
Moral Teleology supplies the deficiency in physical Teleology, and first establishes a Theology ; because the latter, if it did not borrow from the former without being observed, but were to proceed consistently, could only found a Demonology, which is incapable of any definite concept.
Immanuel Kant
Source
Report...
If the aim of physical theories is to explain experimental laws, theoretical physics is not an autonomous science; it is subordinate to metaphysics.
Arthur Conan Doyle
Source
Report...
If, when a man writes a poem or commits a murder, the bodily movements involved in his act result solely from physical causes, it would seem absurd to put up a statue to him in the one case and to hang him in the other.
Bertrand Russell
Source
Report...
Happiness is a state of mind. With physical comforts if your mind is still in a state of confusion and agitation, it is not happiness. Happiness means calmness of mind.
Tenzin Gyatso, 14th Dalai Lama
Source
Report...
Strength does not come from physical capacity. It comes from an indomitable will.
Mahatma Gandhi
Source
Report...
Private property has made us so stupid and partial that an object is only ours when we have it, when it exists for us as capital … Thus all the physical and intellectual senses have been replaced by … the sense of having.
Karl Marx
Source
Report...
We shall therefore assume the complete physical equivalence of a gravitational field and a corresponding acceleration of the reference system.
Albert Einstein
Source
Report...
Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.
Stephen Hawking
Source
Report...
One of the wonderful things about the information highway is that virtual equity is far easier to achieve than real-world equity... We are all created equal in the virtual world and we can use this equality to help address some of the sociological problems that society has yet to solve in the physical world,
Bill Gates
Source
Report...
Religion is a matter of the heart. No physical inconvenience can warrant abandonment of one's own religion.
Mahatma Gandhi
Source
Report...
Every physical concept must be given a definition such that one can in principle describe, in virtue of this definition, whether or not it applies in each particular case.
Albert Einstein
Source
Report...
I give you three examples: first, medical space research may open up new understanding of man's relation to his environment. Examinations of the astronaut's physical, and mental, and emotional reactions can teach us more about the differences between normal and abnormal, about the causes and effects of disorientation, about changes in metabolism which could result in extending the life span. When you study the effects on our astronauts of exhaust gases which can contaminate their environment, and you seek ways to alter these gases so as to reduce their toxicity, you are working on problems similar to those in our great urban centers which themselves are being corrupted by gases and which must be clear.
John F. Kennedy
Source
Report...
I have no doubt that the Romans planned the time-table of their days far better than we do. They rose before the sun at all seasons. Except in wartime we never see the dawn. Sometimes we see sunset. The message of sunset is sadness; the message of dawn is hope. The rest and the spell of sleep in the middle of the day refresh the human frame far more than a long night. We were not made by Nature to work, or even play, from eight o'clock in the morning till midnight. We throw a strain upon our system which is unfair and improvident. For every purpose of business or pleasure, mental or physical, we ought to break our days and our marches into two.
Winston Churchill
Source
Report...
Hesitation of any kind is a sign of mental decay in the young, of physical weakness in the old.
Oscar Wilde
Source
Report...
But whether the risks to which liberty exposes us are moral or physical our right to liberty involves the right to run them. A man who is not free to risk his neck as an aviator or his soul as a heretic is not free at all; and the right to liberty begins, not at the age of 21 years but 21 seconds.
George Bernard Shaw
Source
Report...
To one who reads the spirit of the Gita, it teaches the secret of nonviolence, the secret of realizing self through the physical body.
Mahatma Gandhi
Source
Report...
Though one discovery always surpasses another, and though the chemical and physical knowledge accumulated since his time has gone beyond all Lavoisier's dreams, his work, like that of Newton and a few other rare spirits, will remain ever young. Certain details will age, as do the fashions of another time, but the foundation, the method, constitute one of those great aspects of the human mind, the majesty of which is only increased by years.
Louis Pasteur
Source
Report...
We pack the physical outline of the creature we see with all the ideas we have already formed about him, and in the complete picture of him we compose in our minds those ideas have certainly the principal place.
Marcel Proust
1
2
3
4
5
6
7
8
9
...
20
Quote of the day
Joy is like restless day; but peace divine Like quiet night; Lead me, O Lord, — till perfect Day shall shine Through Peace to Light.
Adelaide Anne Procter
Featured Authors
Lists
Predictions that didn't happen
If it's on the Internet it must be true
Remarkable Last Words (or Near-Last Words)
Picture Quotes
Confucius
Philip James Bailey
Eleanor Roosevelt
Letitia Elizabeth Landon
Popular Topics
life
love
nature
time
god
power
human
mind
work
art
heart
thought
men
day
×
Lib Quotes