Ten decimal places of p are sufficient to give the circumference of the earth to a fraction of an inch, and thirty decimal places would give the circumference
of the visible universe to a quantity imperceptible to the most powerful microscope. Simon Newcomb (1835-1909)
I myself have yielded to the temptation of calculating quantities that interested me to a greater number of decimals than could ever be required, and can
testify to the pleasure of admiring a long row of figures in a new result and realising what a veritable triumph of algebra and arithmetic they represent.
James Whitbread Lee Glaisher (1848-1928)
"No doubt the desire to obtain the values of these quantities to a great many figures is also partly due to the fact that most of
them are interesting in themselves; for e, p, g, log2, and many other numerical quantities occupy a curious, and some of them
almost a mysterious, place in mathematics, so that there is a natural tendency to do all that can be done towards their precise
determination"
J. W. L. Glaisher, 1915.