There are many good "diaries" written by pregnant women for pregnant women, but a dairy written by an "expecting father" is not common. Most men hide their feelings under the archetype of "a strong, tough guy". They forbid themselves from expressing them, even when the arrival of his first son brings forth a wave of new and profound emotions. This small book has that merit. The author has allowed himself to write freely, without shame the feelings that invaded his heart and mind while his wife shared with him the impressions, emotions and experiences of the coming of their first son, a few years back. He did this by writing letters to his unborn son telling him how he, as a father-to-be, was experiencing his wife's pregnancy. In the process it became his experience of an "expecting father". There are many men, too many, who have not had the chance to confess to themselves nor to others what they have felt while their wives were pregnant. Probably because they did not have a chance to reflect consciously about such new emotions, nor did they have a frame of reference of another man experiencing those feelings and expressing them. This is the reason why this book may be helpful. It offers to those "expecting father" a rich frame of reference, which they can use to clarify their feelings. They will find out how common these emotions can be when they read in this diary how another man had similar responses.