My dear young lady, there was a great deal of truth; I dare say, in what you said, and you looked very pretty while you said it, which is much more important.
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.
There was a young man who said though, it seems that I know that I know, but what I would like to see is the I that knows me when I know that I know that I know.