The melting pot of America has many strange ingredients but none is more exotic than the Asians. They are known as dour, enigmatic people who prize science and silence. Many dress properly with well-fitted, traditional clothes. They style their hair without dyes, curling irons or spray. Unlike the blacks and Muslims, they have not tried to force their ethnic rituals and holidays on the rest of us. Often they exhibit a reserved attitude toward sexuality and we can be grateful for that.