When you find that people are not telling you the truth---look out!

What's wrong with my proposition?"
Poirot rose. "If you will forgive me for being personal - I do not like your face.

Very few of us are what we seem.

If one sticks too rigidly to one's principles, one would hardly see anybody.

Never do anything yourself that others can do for you.

These little grey cells. It is up to them.