Try, for the moment, to mimic my actions.

See! I lift this hand, and instinctively (nay, I detected the movement, sir, quickly as you remembered yourself), you raise the one directly opposite to it.

It is like seeing yourself in a mirror.

You turn your head to the right, but your image turns to the left." Mr.Gryce's laugh rang out in spite of himself.

He was not often caught napping, but this woman exercised a species of fascination upon him at times, and it rather amused than offended him, when he was obliged to acknowledge himself defeated.
"Very good! You have proved your point quite satisfactorily; but what conclusions are to be drawn from it?
That the man was not left-handed, or that he was not standing in the place you have assigned to him ?" "Shall we go against the doctors?
They say that the blow was a left-handed one.