Faith

Faith in its essence is a light in the soul which turns towards the truth even when the mind doubts or the vital revolts or the physical consciousness denies it. When this extends itself to the instruments, it becomes a fixed belief in the mind, a sort of inner knowledge which resists all apparent denial by circumstances or appearances, a complete confidence, trust, adhesion in the vital and in the physical consciousness, an invariable clinging to the truth in which one has faith even when all is dark around and no cause of hope seems to be there.

Ref: The Mother with Letters on the Mother