DOCTOR: Davros, if you had created a virus in your laboratory, something contagious and infectious that killed on contact, a virus that would destroy all other forms of life, would you allow its use?

DAVROS: It is an interesting conjecture.

DOCTOR: Would you do it?

DAVROS: The only living thing, a microscopic organism reigning supreme. A fascinating idea.

DOCTOR: But would you do it?

DAVROS: Yes. Yes. To hold in my hand a capsule that contains such power, to know that life and death on such a scale was my choice. To know that the tiny pressure on my thumb, enough to break the glass, would end everything. Yes, I would do it! That power would set me up above the gods. And through the Daleks, I shall have that power!