Baron Robert Stephenson Smyth Baden-Powell Baden-Powell of Gilwell, My Adventures as a Spy
“ I was at one time watched by a detective who one day was a soldierly-looking fellow and the next an invalid with a patch over his eye. I could not believe it was the same man until I watched him from behind and saw him walking, when at once his individuality was apparent.For mannerisms, a spy has by practice to be able to show an impediment in his speech one day, whereas the next a wiggle of an eyelid or a snuffling at the nose will make him appear a totally different being.For a quick change, it is wonderful what difference is made by merely altering your hat and necktie. ”
