The world in this sense is most certainly to be rejected, but this does not mean that we are to hate life, culture, nature, sex and other material things. Everything created by God is good, and nothing is to be rejected if it is received with thanksgiving. We have been created to enjoy God's world in all its richness.
Human culture is also to be enjoyed.
But wherever Platonism has affected Christian teaching there has been a separation of the sacred and secular. All other activities are secular. The sacred is said to be more spiritual. Even where a necessary involvement in everyday tasks is acknowledged to be a Christian duty, the work, it is said, has to be done only physically . The spirit within has to be involved in silent communion with God, practicing his presence.