Two wings lift a person up from earthly concerns: Simplicity in intention, and Purity in feeling.
Simplicity is the intention, purity in the affection; simplicity turns to God, purity unites with and enjoys him.
Simplicity reaches out after God; purity discovers and enjoys Him.
If thou wilt receive profit, read with humility, simplicity and faith, and seek not at any time the fame of being learned.
Let this be thy whole endeavor, this thy prayer, this thy desire,-that thou mayest be stripped of all selfishness, and with entire simplicity follow Jesus only.
If thou hadst simplicity and purity, thou wouldst be able to comprehend all things without error, and behold them without danger. The pure heart safely pervades not only heaven, but hell.