In vita itaque apprime utile est, intellectum seu Rationem, quantum possumus, perficere, et in hoc uno summa hominis felicitas seu beatitudo consistit; quippe beatitudo nihil aliud est, quam ipsa animi acquiescentia quae ex Dei intuitiva cognitione oritur. It is therefore extrememly useful in life to perfect as much as we can the intellect or reason, and of this alone doesthegreatest happiness or blessedness of man exist: for blessedness is nothing else than satisfaction of mind which arises from the intuitive knowledge of God.
If quantum communication and quantum computation are to flourish, a new information theory will have to be developed.hans christian von baeyer
It seems to me that we must make a distinction between what is "objective" and what is "measurable" in discussing the question of physical reality, according to quantum mechanics. The state-vector of a system is, indeed, not measurable , in the sense that one cannot ascertain, by experiments performed on the system, precisely (up to proportionality) what the state is; but the state-vector does seem to be (again up to proportionality) a completely objective property of the system, being completely characterized by the results it must give to experiments that one might perform.roger penrose
O mihi tum longae maneat pars ultima vitae, Spiritus et quantum sat erit tua dicere facta.
Murphy's quantum Law: Anything that can, could have, or will go wrong, is going wrong, all at once.
For the most part, quantum theory has been of little practical value in my life.Jenny Diski
People get a lot of confusion, because they keep trying to think of quantum mechanics as classical mechanicssidney coleman
The underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws leads to equations much too complicated to be soluble. It therefore becomes desirable that approximate practical methods of applying quantum mechanics should be developed, which can lead to an explanation of the main features of complex atomic systems without too much computation.paul dirac
I liked quantum mechanics very much. The subject was hard to understand but easy to apply to a large number of interesting problems.willis lamb
A gifted experimentalist, and theoretician, in the best Newtonian tradition... His contributions to quantum measurements, and elucidative teachings on quantum mechanics, have not yet received the attention they deserve.willis lamb
In mysteries what we know, and our realization of what we do not know, proceed together; the larger the island of knowledge, the longer the shoreline of wonder. It is like the quantum world, where the more we understand its formalism, the stranger that world becomes.huston smith
... one can still say that quantum mechanics is the key to understanding magnetism. When one enters the first room with this key there are unexpected rooms beyond, but it is always the master key that unlocks each door.
As with all quantum devices, a qubit is a delicate flower. If you so much as look at it, you destroy it.hans christian von baeyer
The theory of quantum electrodynamics describes Nature as absurd from the point of view of common sense. And it agrees fully with experiment. So I hope you accept Nature as She is absurd.richard feynman
Et ipse quidem, quamquam medio in spatio integræ ætatis ereptus, quantum ad gloriam, longissimum ævum peregit.
If quantum communication and quantum computation are to flourish, a new information theory will have to be developed.
The underlying physical laws necessary for the mathematical theory of a large part of physics and the whole of chemistry are thus completely known, and the difficulty is only that the exact application of these laws leads to equations much too complicated to be soluble. It therefore becomes desirable that approximate practical methods of applying quantum mechanics should be developed, which can lead to an explanation of the main features of complex atomic systems without too much computation.
Relativity eliminated the Newtonian illusion of absolute space and time; quantum theory eliminated the Newtonian dream of controllable measurement process; chaos eliminates the Laplacian fantasy of deterministic predictability.
However the development proceeds in detail, the path so far traced by the quantum theory indicates that an understanding of those still unclarified features of atomic physics can only be acquired by foregoing visualization and objectification to an extent greater than that customary hitherto...
Whenever a time comes that the justice overwhelms and overcomes cruelty, it is prohibited to form negative conjectures and opinions about anyone, except when one knows it about him. But whenever a time comes that cruelty and oppression overwhelms the (quantum of) justice, then one must not have good opinions about the beneficence of a person, till such time he knows it(for sure).
Anyone who is not shocked by quantum theory has not understood it.
quantum physics is no longer an abstract theory for specialists. We must now absolutely include it in our education and also in our culture.claude cohen-tannoudji
quantum est in rebus inane! How much folly there is in human affairs.persius
I am a quantum Engineer, but on Sundays I Have Principles.john stewart bell
The quantum Universe has a quotation from me in every chapter but it's a damn good book anyway.richard feynman
After the conversations about Indian philosophy, some of the ideas of quantum Physics that had seemed so crazy suddenly made much more sense.