Dear Ramesan Hello! Hare Krishna! Yes. Krishna exists... He is the Supreme Person, the original person... So I have seen Him, I know He exists. You can see Him and know He exists also, you just have to follow the process, that's all. But Krishna doesn't show Himself to everyone. Even when Krishna was personally present on Earth 5000 years ago many of the people who met Him didn't realize He was the Supreme Personality of Godhead, it is a very special thing to be able to understand the personal nature of God. Many can become liberated, to understand the all-pervasive, impersonal energy of Krishna... But not so many understand Krishna... So I would recommend you to chant the Hare Krishna maha-mantra and read Srila Prabhupada's books... What do you think? Looking forward to hearing from you. Madhudvisa dasa