There is nothing so dangerous for anyone who has something to hide as conversation!... A human being, Hastings, cannot resist theopportunity to reveal himself and express his personality which conversation gives him. Every time he will give himself away.

You can only really get under anybody's skin if you are married to them.

There is something about conscious tact that is very irritating.

It's what's in *yourself* that makes you happy or unhappy.

I have no pity for myself either. So let it be Veronal. But I wish Hercule Poirot had never retired from work and come here to grow vegetable marrows.

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

That is what I mean. A bath! The receptacle of porcelain, one turns the taps and fills it, one gets in, one gets out and ghoosh - ghoosh - ghoosh, the water goes down the waste pipe!" "M. Poirot are you quite mad?" "No, I am extremely sane.