Inner World or Spiritual World is full of mysteries, which can be viewed and observed through introspection, contemplation and Meditation. Meditation is a a tool to come to know your potentiality and divinity also to manifest them.
ते ध्यान योगनुगता अपश्यन, देवात्मशक्ति स्वगुनैह निगुढम 
te dhyan yoganugata apashyan, devatmashakti swagunaih nigudhaam
Seers realized their divinities through Dhyana Yoga (Yoga of Meditation) that all divine powers are dormant within which can be awakened and manifested through Meditation and Action.