You scarcely ever meet a really shy man—except in novels or on the stage, where, by the bye, he is much admired, especially by the women.
There, in that supernatural land, he appears as a fair-haired and saintlike young man—fair hair and goodness always go together on the stage. No respectable audience would believe in one without the other.
 Jerome K. Jerome, Idle Thoughts of an Idle Fellow (1886). copy citation

Context

“Before the growing insight and experience the diffidence recedes. A man rarely carries his shyness past the hobbledehoy period. Even if his own inward strength does not throw it off, the rubbings of the world generally smooth it down. You scarcely ever meet a really shy man—except in novels or on the stage, where, by the bye, he is much admired, especially by the women. There, in that supernatural land, he appears as a fair-haired and saintlike young man—fair hair and goodness always go together on the stage. No respectable audience would believe in one without the other. I knew an actor who mislaid his wig once and had to rush on to play the hero in his own hair, which was jet-black, and the gallery howled at all his noble sentiments under the impression that he was the villain.” source