I have yet to find a person who can state the entire theory (of Stone's) from memory. (1973)
It sees that publishing an idea in a Festschrift is the quickest way to have it forgotten. (1973)
Analysis wil play second fiddle to algebra. The algebraic structure sooner or later comes to dominate, whether or not it is recognized when a subject is born. (1998)
As long as a branch of secience offers an abundance of problems, so long is it alive. --- David Hilbert, 1900.