And the disciples of John and of the Pharisees used to fast: and they came and said unto him, Why do the disciples of John and of the Pharisees fast, but your disciples fast not?
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Basil the Great
AD 379
Take heed that you do not make fasting to consist only in abstinence from meats. True fasting is to refrain from vice. Shred to pieces all your unjust contracts. Pardon your neighbors. Forgive them their trespasses. Homily , On Fasting.