The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

P. Unless we understand what another is saying, how can we approach even the fringes of consensus?

Q. Many conflicts of this world are believed to be the result of misunderstandings.

R. Even where people speak the same language, grave difficulties of semantics still often arise.

S. But where better to begin the process of understanding than in the well springs of communication-of language, of speech?