The measure of greatness in a scientific idea is the extent... - Paul A.M. Dirac
"The measure of greatness in a scientific idea is the extent to which it stimulates thought and opens up new lines of research."
More quotes by Paul A.M. Dirac
"The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."