Abraham Pais Quote
Progress leads to confusion leads to progress and on and on without respite. Every one of the many major advances … created sooner or later, more often sooner, new problems. These confusions, never twice the same, are not to be deplored. Rather, those who participate experience them as a privilege.
Inward Bound : Of Matter and Forces in the Physical World (1988), p. 4 ISBN 0198519974