There's nothing so dangerous for anyone who has something to hide as conversation.

As you yourself have said, what other explanation can there be?' Poirot stared straight ahead of him. 'That is what I ask myself,' he said. 'That is what I never cease to ask myself.

Too much mercy... often resulted in further crimes which were fatal to innocent victims who need not have been victims if justice had been put first and mercy second.

I don't know. I don't know at all. And that's what's frightening the life out of me. To have no idea.

In my end is my beginning - that's what people are always saying. But what does it mean?

Words are such uncertain things, they so often sound well but mean the opposite of what one thinks they do.

I suppose without curiosity a man would be a tortoise. Very comfortable life, a tortoise has.