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

It is the quietest and meekest people who are often capable of the most sudden and unexpected violences for the reason that when their control does snap, it goes entirely. (Hercule Poirot)

If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

Sensationalism dies quickly, fear is long-lived.

In my end is my beginning - that's what people are always saying. But what does it mean?

To win a war is as disasterous as to lose one.

the detective's highest talent lay in the gentle art of seeking favours under the guise of conferring them!