What passages show John Proctor's conflict?

Proctor: [With the cry of his whole soul] 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! - Act IV

I do think I see some shred of goodness in John Proctor. Not enough to weave a banner with, but white enough to keep it from such dogs. Give them no tear! Tears pleasure them! Show honor now, show a stony heart and sink them with it! - Act IV