It is almost impossible to overestimate the value of true humility and its power in the spiritual life. For the beginning of humility is the beginning of blessedness and the consummation of humility is the perfection of all joy. Humility contains in itself the answer to all the great problems of the life of the soul. It is the only key to faith, with which the spiritual life begins: for faith and humility are inseparable. In perfect humility all selfishness disappears and your soul no longer lives for itself or in itself for God: and it is lost and submerged in Him and transformed into Him.
Thomas Merton, New Seeds of Contemplation