Forget all the silly e-mails. The cultivated person commits important and personal news to paper in his or her own hand. The form is a question of format. DinA4 or DinA6? The Munich industrial designer Konstantin Grcic shows us how stylishly a letter can be opened. With a wafer-thin paper knife made of hand-crafted porcelain measuring barely 13 centimetres. Not that it would not be suitable for bills, but an envelope full of personal news is considerably more exciting.