I learned ... that one can never go back, that one should not ever try to go back - that the essence of life is going forward. Life is really a one way street, isn't it?

Exactly! It is absurd - improbable - it cannot be. So I myself have said. And yet, my friend, there it is! One cannot escape from the facts.

Poirot," I said. "I have been thinking." "An admirable exercise my friend. Continue it.

Everything has got its right size. When it is its right size and well run it's the tops.

I don't go in for being sorry for people. For one thing it's insulting. One is only sorry for people when they're sorry for themselves. Self-pity is one of the biggest stumbling blocks in the world today.

how tedious is retirement! You cannot imagine to yourself the monotony with which day comes after day.

To rush into explanations is always a sign of weakness.