The Pythagorean Triangle or, The Science of Numbers
by Rev. G. Oliver, D.D.
1875

Landmarks are theoretically unalterable, and whose peculiar rites and ordinances are pronounced to be the same yesterday, to-day, and for ever. But, alas! the failure of these conditions proves that Masonry is but a mere human institution after all. It would be easy to produce a host of altered Landmarks for the purpose of showing that no obsolete ceremony or antiquated observance has been able to hold its own against the electric agency of modern progress.
(Typographical errors above are due to OCR software and don't occur in the book.)