Refining is inevitable in ...

Refining is inevitable in science when you have made measurements of a phenomenon for a long period of time.
 Charles Francis Richter

Quotes from the same author

No joy in nature is so sublimely affecting as the joy of a mother at the good fortune of a child.
 Charles Francis Richter
Don't wait for extraordinary circumstance to do good; try to use ordinary situations.
 Charles Francis Richter
As seismologists gained more experience from earthquake records, it became obvious that the problem could not be reduced to a single peak acceleration. In fact, a full frequency of vibrations occurs.
 Charles Francis Richter