The "universe" is an hypothesis, like the atom, and must be allowed the freedom to have properties and to do things which would be contradictory and impossible for a finite material structure. What we observe are the stars and nebulae constituting "our neighbourhood." All that goes beyond that, in time or in space, or both, is pure extrapolation. The conclusions derived about the expanding universe depend on the assumed homogeneity and isotropy, i. e. on the hypothesis that the observed finite material density and expansion of our neighbourhood are not local phenomena, but properties of the "universe." It is not inconceivable that this hypothesis may at some future stage of the development of science have to be given up, or modified, or at least differently interpreted.
Willem de SitterRelated topics
atom beyond contradictory density development expansion freedom future given homogeneity hypothesis impossible modified nebula observe pure science space things extrapolation starsRelated quotes
The male sense of space must differ from that of the female, who has such interesting, active, and significant inner space. The space that interests men is outer. The fly ball high against the sky, the long pass spiraling overhead, the jet fighter like a scarcely visible pinpoint nozzle laying down its vapor trail at 40,000 feet, the gazelle haunch flickering just beyond arrow-reach, the uncountable stars sprinkled on their great black wheel, the horizon, the mountaintop, the quasar - these bring portents with them and awaken a sense of relation with the invisible, with the empty. The ideal male body is taut with lines of potential force, a diagram extending outward; the ideal female body curves around centers of repose.
John Updike
This morning I received a letter from de Bellio. He writes that he does not believe scientific research into the nature of color and light can help the artist, neither can anatomy nor the laws of optics. He wants to discuss these questions with me and find out my views. Now everything depends on how this knowledge is to be used. But surely it is clear that we could not pursue our studies of light with much assurance if we did not have as a guide the discoveries of Chevreul and other scientists. I would not have distinguished between local color and light if science had not given us the hint; the same holds true for complementary colors, contrasting colors, etc. 'Yes', he will tell me: 'but these have always been taken into account, look at Monet' It is at this point that the question becomes serious!
Camille Pissarro
In India also, for century, education imparted through the medium of a foreign language has unduly dominated its academic life and it has now produced a class of men who are unconsciously so denationalised that any far reaching proposal for the recognition of the Indian languages as the vehicle of teaching and examination up to the highest University stage is either ridiculed as impossible or branded as reactionary. But I plead earnestly for the acceptance of this fundamental principle not on account of any blind adherence to things that I claim as my own but out of a firm conviction that the fullest development of the mind of a learner is possible only by this natural approach and also that by this process alone can there be a great revival of the glory and richness of the Indian languages.
Syama Prasad Mookerjee
The start of work means the end to freedom, but also to doubt, intensity and wayward desires. The accountant's ten thousand possibilities have been reduced to an agreeable handful. She has a business card which she hands over in meetings and which tells other people-and, more meaningfully perhaps, reminds her-that she is a Business Unit Senior manager, rather than a vaporous transient consciousness in an incidental universe. How satisfying it is to be held in check by the assumptions of colleagues, instead of being forced to contemplate, in the loneliness of the early hours, all that one might have been and now never will be. ... Life is no longer mysterious, sad, haunting, touching, confusing or melancholy; it is a practical stage for clear-eyed action.
Alain de Botton
1. There is at present in the material world a universal tendency to the dissipation of mechanical energy.
2. Any restoration of mechanical energy, without more than an equivalent of dissipation, is impossible in inanimate material processes, and is probably never effected by means of organized matter, either endowed with vegetable life or subjected to the will of an animated creature.
3. Within a finite period of time past, the earth must have been, and within a finite period of time to come the earth must again be, unfit for the habitation of man as at present constituted, unless operations have been, or are to be performed, which are impossible under the laws to which the known operations going on at present in the material world are subject.
William Thomson