Sentence:  [T]he very constitution of society is based upon this volunteer system of <WSD>paying the piper</WSD>. Honest men <WSD>pay the piper</WSD> for rogues, and full purses for empty ones. 
Meaning of the word marked with <WSD> tags:  To pay a monetary or other debt or experience unfavorable consequences, especially when the payment or consequences are inevitable or a result of something one has enjoyed.