I don't think necessity is the mother of invention - invention, in my opinion, arises directly from idleness, possibly also from laziness. To save oneself trouble.

I have always been so sure - too sure... But now I am very humble and I say like a little child: 'I do not know...' ~ Hercule Poirot

I have no more now to say. I do not know, Hastings, if what I have done is justified or not justified. No - I do not know. I do not believe that a man should t…

This, Hastings, will be my last case. It will be, too, my most interesting case - and my most interesting criminal.

Progress doesn't come from early risers - progress is made by lazy men looking for easier ways to do things.

There is a sort of enthusiasm in all projectors, absolutely necessary for their affairs, which makes them proof against the most fatiguing delays, the most mor…

The good thing about reinventing the wheel is that you can get a round one.