The world says ‘seeing is believing’, but the guru says ‘seeing is belying’. The world urges us ‘to become’ someone, the guru tells us ‘to be’ what we are. The Truth is very subtle, difficult to grasp and seemingly contradicts worldly experiences. The discipline, therefore, many times doubts it’s existence. The affirmation of the guru instills confidence in the disciplines that the Truth exists, It can be realized and that they too can directly experience it.
Swami Tejomayananda, Ganapati Atharvashirsha Upanishad