Mathematics is a vast adventure; its history reflects some of the noblest thoughts of countless generations. Dirk Jan Struik More Quotes by Dirk Jan Struik More Quotes From Dirk Jan Struik Mathematicians grow very old; it is a healthy profession. The reason you live long is that you have pleasant thoughts. Math and physics are very pleasant things to do. Dirk Jan Struik healthy math long I've lived this long because I didn't die. Dirk Jan Struik dies long