Statistics: the mathematical theory of ignorance.
In brief, the whole world is the totality of mathematically expressible motions of objects in space and time, and the entire universe is a great, harmonious, and mathematically designed machine.
Mathematics is a body of knowledge, but it contains no truths.
A proof tells us where to concentrate our doubts.
There is no rigorous definition of rigor.
Universities hire professors the way some men choose wives - they want the ones the others will admire.