Leela: Why are we listening to them? It is a waste of time.The Doctor; It is difficult to know what will be a waste of time until after the time has been wasted, by which...

Fourth Doctor: You know, the very powerful and the very stupid have one thing in common: they don’t alter their views to fit the facts; they alter the facts to fit their views.

You know, you are a classic example of the inverse ratio between the size of the mouth and the size of the brain.

Our essence is change. We are movement. Being out of balance is life. Perfect balance. Stasis. That is death. Life yearns for perfection. Death is perfection.