Peter Ceffons was a French Cistercian theologian and scholastic philosopher, who became Abbot of Clairvaux. He is considered an early humanist

Renaissance humanism

Renaissance humanism was an activity of cultural and educational reform engaged by scholars, writers, and civic leaders who are today known as Renaissance humanists. It developed during the fourteenth and the beginning of the fifteenth centuries, and was a response to the challenge of Mediæval...

 for his style.

He lectured on the Sentences

Sentences

The Four Books of Sentences is a book of theology written by Peter Lombard in the twelfth century. It is a systematic compilation of theology, written around 1150; it derives its name from the sententiae or authoritative statements on biblical passages that it gathered together.-Origin and...

at Paris in the late 1340s, using angle

Angle

In geometry, an angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle.Angles are usually presumed to be in a Euclidean plane with the circle taken for standard with regard to direction. In fact, an angle is frequently viewed as a measure of an circular arc...

 as a metaphor. He was influenced by Adam Wodeham, Gregory of Rimini

Gregory of Rimini

Gregory of Rimini , also called Gregorius de Arimino or Ariminensis, was one of the great scholastic philosophers and theologians of the Middle Ages...

 and John of Mirecourt

John of Mirecourt

John of Mirecourt was a Cistercian scholastic philosopher of the fourteenth century, from Lorraine. He was a follower of William of Ockham; he was censured by Pope Clement VI.-References:...

.

He wrote a satirical work Epistola Luciferi ad Cleros, an attack on the secular clergy; it is dated to 1352.