Litmus Paper Quotes
- Birds ... are sensitive indicators of the environment, a sort of "ecological litmus paper," ... The observation and recording of bird populations over time lead… — Roger Tory Peterson
- A playwright... is... the litmus paper of the arts. He's got to be, because if he isn't working on the same wave length as the… — Arthur Miller
- Writing is the litmus paper of thoughtthe very center of schooling. — Ted Sizer
- Today, blacks are no longer the litmus paper or the barometer of social change. Blacks are in every segment of society and there are laws… — Bayard Rustin
- Words are the litmus paper of the mind. — Terry Pratchett