It has passed over twenty five years since I encountered fuzzy mathematics for the first time but I can still feel this excitement, which I have experienced during that meeting with an unknown mathematical domain. This was different from other classical mathematical fields but I immediately felt that the concept of imprecision would be expected to have a fine future. Since that day in 1987, when I held in my hand the first available paper on the medical applications of fuzzy relations, it was obvious for me that I could devote my time to investigate the topic much deeper. I made an acquaintance with the creator of fuzzy mathematics, Professor Lotfi Zadeh, in Budapest in 1999. I expected to be confronted with a self-confident and outstanding scientist who was not going to talk to unknown people. Instead I saw a very nice and modest man speaking to everybody in a very friendly manner, especially to new members of the fuzzy society. His behavior awoke in me sympathy and gratitude for his kindness and I wanted to meet him again. The idea of editing a book, based on our memories and experiences concerning fuzzy mathematics, is really great. Let me thus tell you about my own scientific carrier in which fuzzy mathematics has played a dominant role.