“Nothing is more practical than a good theory.”

-Vladimir N. Vapnik, The Nature of Statistical Learning Theory

“We all know the feeling that follows when one investigates a problem, goes through a large amount of algebra, and finally investigates the answer to find that the entire problem is illuminated not by the analysis but by the inspection of the answer.”

-Tom Cover, Joy Thomas, Elements of Information Theory

“If you can’t explain it simply, you don’t understand it well enough.”

– Albert Einstein

“… for these last (to give precise definitions of the notions used and to employ these to build correct proofs) are no more, in the end, than a “pulling into shape” of intuition.”

– Jean Dieudonné, Infinitesimal Calculus


(Life is limited but knowledge to be gained is unlimited. To use the limited to pursue the unlimited was foolish.)

– 莊子(Zhuangzi),《莊子‧養生主》


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