What is Siddhartha realizing after all his years spent in spiritual study?

I think this has something to do with unity of all things. Siddhartha says that expressign love and admiration toward all things is the most important thing in the world. Govinda is confused by most of what Siddhartha says, but he feels certain that his old friend is a holy man. Preparing to leave, Govinda asks Siddhartha for something to help him along his path. Siddhartha tells Govinda to kiss his forehead. Doing so causes Govinda to see a continuous stream of different faces in place of Siddhartha's. Overwhelmed by this display of unity and timelessness, Govinda falls to ground, tears flowing uncontrollably.