Is mathematics doomed to suffer the same fate as other sciences that have split into separate branches?... Mathematics is, in my opinion, an indivisible whole... May the new century bring with it ingenious champions and many zealous and enthusiastic disciples.
David HilbertMathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
David HilbertHow thoroughly it is ingrained in mathematical science that every real advance goes hand in hand with the invention of sharper tools and simpler methods which, at the same time, assist in understanding earlier theories and in casting aside some more complicated developments.
David HilbertWe do not master a scientific theory until we have shelled and completely prised free its mathematical kernel.
David Hilbert