"The Moon causes tides in the ocean, and human beings are mostly water. So, it makes sense to claim that planets have an effect on our luck."
"But tides are a side effect of gravity, which is a property of every object with mass, not just planets. Right now this table is exerting on us a tidal force much greater than the Moon's."
"You're calling me inconsistent! Me, of all people, who has held the same ideas for decades now: when I do something, then it's fine, but when others do it, it's wrong! No one is as consistent as I am!"
"Tsar Peter I, also known as Peter the Great, suffered from asthma. We know today that asthma has a genetic component. Peter's children got half his genes. His grandchildren got a quarter. His great-grandchildren got an eighth, and so on."
"And what you propose is...?"
"To identify direct descendants of Peter the Great and use their cells as a homeopathic remedy for asthma."
"Er... Well, Mercedes... You know it's not that simple... Just think, a man with my commitments and responsibilities... And it's just papers anyway. What matters is that we love each other, right? Besides..."
"Look: when you can claim to have lived among frogs for so long as I have, to have personally studied every stage of their life cycle, to be able to tell species apart by their croaking... Then you can come back to me and tell me they're not birds!"