Whoever loves himself cannot love God. - Diadochos of Photiki

Spiritual discourse always keeps the soul free from self-esteem, for it gives every part of the soul a sense of light, so that it no longer needs the praise of men.

If the soul, through attentiveness, reduces the blindness caused by the love of this world, it will consider its slightest faults to be very grave and will continually shed tears. ... But if the soul persists in its worldly disposition, even though it commits a murder or some other act deserving severe punishment, it takes little notice; and it is quite unable to discern its other faults, often considering them to be signs of progress, and in its wretchedness it is not ashamed to defend them heatedly.

If, therefore, we learn persistently to be detached from the good things of this world, we shall be able to unite the earthly appetite of the soul to its spiritual and intellectual aspiration, through the communion of the Holy Spirit who brings this about within us. For unless His divinity actively illumines the inner shrine of our heart, we shall not be able to taste God's goodness with the perceptive faculty undivided, that is, with unified aspiration.