Below are examples of chiasmi, which are expressions in which the order of words are reversed for dramatic/literary effect in two otherwise parallel phrases. (Perhaps the most famous chiasmus is Kennedy's "Ask not ..." line. Another is his father's "When the going gets tough ..." )
The examples below are all taken from Mardy Grothe's excellent book "Don't Let a Fool Kiss You Or a Kiss Fool You."
A: "We are not put on this earth primarily to see through one another, but to see one another through." -- Peter De Vries
B: "Defeat the fear of death and welcome the death of fear." -- G. Gordon Liddy
C: "It is the dull man who is always sure, and the sure man who is always dull." -- Mencken
D: "Failure is the foundation of success, success the lurking place of failure." -- Lao Tzu