Mysticism is different from other sciences and knowledge. The basic difference between mysticism and other sciences is that in other science we obtain knowledge first and then practice it but in mysticism, we’ll have to practice first and with the passage of time, we start obtaining knowledge of mysticism.
Mysticism is variously defined in different traditions. It is variously referred to extraordinary experiences and states of mind. Every state of mind has a background for which it is an implication but mysticism itself allows the human mind to experience things which have no background implications. In fact, it comes into being after the experiences.
It is the expression of innate tendency of a human spirit towards complete harmony. A mystical experience is an intuitive understanding of the meaning of existence, which is intense and self-authenticating. It is also defined as a direct communion with God, which cannot be taught or learned.