O thou dear maid-servant of God! The souls who bear the tests of God become the manifestations of great bounties; for the divine trials cause some souls to become entirely lifeless, while they cause the holy souls to ascend to the highest degree of love and solidity. They cause progress and they also cause retrogression.
- ‘Abdu’l-Baha (‘Tablets of ‘Abdu’l-Baha, vol. 2)