I would not unduly praise the virtue of restraint. It is often merely temperamental. But it is not always a sign of coldness. It may be pride. There can be nothing more humiliating than to see the shaft of one's emotion miss the mark of either laughter or tears. Nothing more humiliating! And this for the reason that should the mark be missed, should the open display of emotion fail to move, then it must perish unavoidably in disgust or contempt.
How very seldom do you encounter in the world a man of great abilities, acquirements, experience, who will unmask his mind, unbutton his brains, and pour forth in careless and picturesque phrase all the results of his studies and observation; his knowledge of men, books, and nature. On the contrary, if a man has by any chance an original idea, he hoards it as if it were old gold; and rather avoids the subject with which he is most conversant, from fear that you may appropriate his best thoughts.
The shy man does have some slight revenge upon society for the torture it inflicts upon him. He is able, to a certain extent, to communicate his misery. He frightens other people as much as they frighten him. He acts like a damper upon the whole room, and the most jovial spirits become, in his presence, depressed and nervous.