Sui generis
In sociology, the "sui generis" is what has been externalized, then internalized in the overall public and becomes a part of society that simply exists in its construct. It is not something that is not thought to have been created, because it is imbedded in everyone's way of thinking and being. Instances include the idea of love, or going to school, or clothing belonging to a specific gender. These examples are "sui generis" for they simply exist in society and are widely accepted without thoughts of where they come from or how they were created.
Humani generis redemptionem
Humani generis redemptionem is an encyclical by Pope Benedict XV given at St. Peter's, Rome, on 15 June, the Feast of the Sacred Heart of Jesus in the year 1917, in the third of his Pontificate. The encyclical points to an ever-increasing number of Christian preachers and an ever-decreasing effect of their preaching. He admonished bishops to be preachers first of all, and to be more careful in the selection of preachers and confessors, for whom Humani generis redemptionem prescribed basic preconditions.