Directions: In this question, the passage consists of six sentences. The first and the sixth sentences are given in the beginning. The other four sentences P, Q, R and S have been jumbled up. Find out the proper order for the four sentences.

S₁: A man can be physically confined within stone walls. S₆: No tyranny can intimidate a lover of liberty. P : But his mind & spirit will still be free. Q : Thus his freedom of action may be restricted. R : His hopes & aspiration still remain with him. S : Hence, he will be free spiritually if not physically. What is the proper sequence?