Time does not dispose of a question - it only presents it anew in a different guise.

There are questions that you don't ask because you're afraid of the answers to them.

Nurses - nurses, you'm all the same. Full of cheerfulness over other people's troubles.

Everybody said, "Follow your heart". I did, it got broken

Many homicidal lunatics are very quiet, unassuming people. Delightful fellows.

Be sure thy sin will find thee out.

You've a pretty good nerve," said Ratchett. "Will twenty thousand dollars tempt you?" It will not." If you're holding out for more, you won't get it. I know what a thing's worth to me." I, also M. Ratchett." What's wrong with my proposition?" Poirot rose. "If you will forgive me for being personal - I do not like your face, M. Ratchett," he said.