How does The Crucible explore the importance of truth, justice, and integrity? Discuss and provide quotes for three potential paragraphs in an essay.

It is ironic that the concept of truth is so woefully and tragically tarnished by those who are intent on doing harm to others by proclaiming that what they speak is the truth. Further irony lies in the fact that such individuals are believed; meanwhile, the innocents' best attempts to convey reality are not believed. In fact, they are treated with skepticism and derision. Two excellent examples of an appeal that the real truth be told is found, firstly, in act 2 with Elizabeth Proctor's plea to her husband, John, that he tell the court the truth about Abigail Williams:

Let you go to Ezekiel Cheever—he knows you well. And tell him what she said to you last week in her uncle’s house. She said it had naught to do with witchcraft, did she not?

Abigail had apparently told John that hers and the other girls' confessions were lies.
A second significant quote is also found in act 3, when John Proctor demands that Mary Warren, their maidservant, confess the truth about a poppet purportedly made by Elizabeth to bewitch Abigail. Mary has already acknowledged that she herself had made the poppet as a gift for Elizabeth and that Abigail had seen her stick the darning needle into the doll's belly once she was done.

Proctor, moving menacingly toward her: You will tell the court how that poppet come here and who stuck the needle in.
Mary Warren: She’ll kill me for sayin' that! Proctor continues toward her. Abby’ll charge lechery on you, Mr. Proctor!

The court claims that it seeks justice for those who have been harmed by the assumed insidious incidents of witchcraft in the village. Judge Danforth is of the opinion that the girls are God's messengers and are used by Him to help bestow the kind of justice that individuals who have served the Devil deserve—execution. To prove that he is there to dispense justice, the judge states in act 3:

In an ordinary crime, how does one defend the accused? One calls up witnesses to prove his innocence. But witchcraft is ipso facto, on its face and by its nature, an invisible crime, is it not? Therefore, who may possibly be witness to it? The witch and the victim. None other. Now we cannot hope the witch will accuse herself; granted? Therefore, we must rely upon her victims - and they do testify, the children certainly do testify. As for the witches, none will deny that we are most eager for all their confessions. Therefore, what is left for a lawyer to bring out? I think I have made my point.

It is pertinently ironic, though, that the judge ridicules and rejects the testimony of others who have not been accused. He does, instead, go out of his way to prove that such individuals are themselves also guilty of evil.
The importance of integrity is probably best illustrated by John Proctor's desperate cry at the end of the play when he refuses to allow his name to be displayed on the church door. He tears up his confession and is prepared to sacrifice his life than tarnish his name. He is willing to die with his integrity intact. When Judge Danforth asks him to hand over his signed confession, he refuses and cries out after the judge questions his sudden refusal:

Because it is my name! Because I cannot have another in my life! Because I lie and sign myself to lies! Because I am not worth the dust on the feet of them that hang! How may I live without my name? I have given you my soul; leave me my name!