On selfishness

The beginning of all passions is self-love, and their result is pride.

St.Maximos the Confessor

The beginning of salvation is self-condemnation.

St. Nilus of Sinai

We should not fear an external enemy; our enemy is within ourselves.

St. Cassian the Roman

No spiritual struggle is great enough if it is not of help to others.

St. John Chrysostomos