If you walk along the street you will encounter a number of scientific problems. Of these, about 80 per cent are insoluble, while 19ยฝ per cent are trivial. There is then perhaps half a per cent where skill, persistence, courage, creativity and originality can make a difference. It is always the task of the academic to swim in that half a per cent, asking the questions through which some progress can be made.
Hermann BondiAll science is full of statements where you put your best face on your ignorance, where you say: ... we know awfully little about this, but more or less irrespective of the stuff we don't know about, we can make certain useful deductions.
Hermann Bondi[Newton's calculations] entered the marrow of what we know without knowing how we know it.
Hermann BondiThe test of science is not whether you are reasonableโthere would not be much of physics if that was the caseโthe test is whether it works. And the great point about Newtonโs theory of gravitation was that it worked, that you could actually say something about the motion of the moon without knowing very much about the constitution of the Earth.
Hermann BondiOn the most usual assumption, the universe is homogeneous on the large scale, i.e. down to regions containing each an appreciable number of nebulae. The homogeneity assumption may then be put in the form: An observer situated in a nebula and moving with the nebula will observe the same properties of the universe as any other similarly situated observer at any time.
Hermann Bondi