Despite the fact that Richard Jr. says that the shield extends down through the house foundation and further, it wobbles several times when someone passes near it or slams their hands on it.
Control Voice: (opening narration) There is a passion in the human heart which is called aspiration. It flares with a noble flame and by its light man has traveled from the caves of darkness to the darkness of outer space. But, when this passion becomes lust when its flame is fanned by greed and private hunger, then aspiration becomes ambition by which sin the angels fell.
Judith Bellero: (Speaking of the Bifrost Alien) Someone spoke of the trembling way: a bridge between earth and heaven. When I grew up, I found it in the mythology book. Scandinavians call it the "Bifrost." I thought of this as our "Bifrost." A trembling way to what for me would be heaven--power, far-flung holdings, undiminishable authority.
Bifrost Alien: (Speaking to Richard Bellero, Jr.) I already see another of your weapons--distrust.
Judith Bellero: Ask him who he is.
Bifrost Alien: A traveler.
Judith Bellero: From where?
Bifrost Alien: My world hovers just above the ceiling of your universe. It is not a planet, it is an amplification of light, some of which radiates from your stars.
Judith Bellero: Perhaps you can explain to it that we are not all scientists, Richard. In our world, naiveté and mindless courage are reserved for very small children and very dedicated scientists. The rest of us will just have to struggle along with our distrust of monsters.
Richard Bellero Sr.: I couldn't keep you from marrying my son. I've done my best to keep him from regretting it.
Judith Bellero: Richard will return in a minute. Is there something I can do for you?
Bifrost Alien: How long is a minute?
Judith Bellero: It passes unnoticed when you're content. For the needy, it can be a string of endless lifetimes.
Bifrost Alien: (Speaking to Judith Bellero) I cannot speak your language. I analyze your eyes. In all the universes, in all the unities beyond the universes, all who have eyes, have eyes that speak, and all speak the same language.
Richard Bellero, Sr.: (Arguing with Judith Bellero) I spend every hour, every dollar, and every dream developing men and means that are devoted to the prevention of war. That says how much I hate war! And yet I am not sickened or enraged, even by war, as I am by a single soul like yours. Your ambition is singularly the most active form of violence I have ever encountered!
Judith Bellero: He does not forgive easily, father. He has your small flaws as well as your great virtues.
Mrs. Dame: Go to him. It is customary for one to comfort a broken enemy... before you discard him.
Judith Bellero: Movements and words accomplish nothing, and only deplete the oxygen and the soul.
Richard Bellero Sr.: Great men are forgiven their murderous wives.
Mrs. Dame: (Referring to the Bifrost Alien) I expected it to kill me, but it looked into my eyes, and I heard myself say, "Can you help?" And it said, "Can I not?"
Control Voice: (closing narration) When this passion called aspiration becomes lust, then aspiration degenerates becomes vulgar ambition by which sin the angels fell.
This is the second consecutive episode guest starring Neil Hamilton. In both this and the previous episode ("The Invisibles"), Hamilton plays an antagonist role.
The storyline for this episode loosely follows Shakespeare's "The Tragedy of Macbeth."