By symmetry we mean the existence of different viewpoints from which the system appears the same. It is only slightly overstating the case to say that physics is the study of symmetry. The first demonstration of the power of this idea may have been by Newton, who may have asked himself the question: What if the matter here in my hand obeys the same laws as that up in the sky-that is, what if space and matter are homogeneous and isotropic?
Philip Warren AndersonRelated topics
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I claim that many patterns of Nature are so irregular and fragmented, that, compared with Euclid - a term used in this work to denote all of standard geometry - Nature exhibits not simply a higher degree but an altogether different level of complexity ... The existence of these patterns challenges us to study these forms that Euclid leaves aside as being "formless," to investigate the morphology of the "amorphous."
Benoît Mandelbrot
Then there is the further question of what is the relationship of thinking to reality. As careful attention shows, thought itself is in an actual process of movement. That is to say, one can feel a sense of flow in the stream of consciousness not dissimilar to the sense of flow in the movement of matter in general. May not thought itself thus be a part of reality as a whole? But then, what could it mean for one part of reality to 'know' another, and to what extent would this be possible?
David Bohm
If you deny any affinity with another person or kind of person, if you declare it to be wholly different from yourself-as men have done to women, and class has done to class, and nation has done to nation-you may hate it, or deify it, but in either case you have denied its spiritual equality, and its human reality. You have made it into a thing, to which the only possible relationship is a power relationship. And thus you have fatally impoverished your own reality.
Ursula K. Le Guin
Though it is folly to suppose that happiness is a matter of volition, and that we can make ourselves content and cheerful whenever we choose - a theory that many poor hypochondriacs are taunted with till they are nigh driven mad - yet, on the other hand, no sane mind is ever left without the power of self-discipline and self-control in a measure, which measure increases in proportion as it is exercised.
Dinah Craik
Oswald Cabal: Rest enough for the individual man, too much and too soon, and we call it death. But for Man, no rest and no ending. He must go on, conquest beyond conquest. First, this little planet and its winds and ways. And then all the laws of mind and matter that restrain him. Then the planets about him, and, at last, out across immensity to the stars. And when he has conquered all the depths of space, and all the mysteries of time, still he will be beginning...
H. G. Wells