Books in good condition, pages have some browning, cut a bit foxing, but pages are clean. Sound bindings.

Tome 1: De la dignité et de l'accroissement des sciences (+ 1 folding map repartition oevres de Bacon)
Tome 2: nouvel organum - essais de morale et de politique - de la sagesse des anciens

Francis Bacon, 1st Viscount St Albans (22 January 1561 – 9 April 1626), known as Lord Verulam between 1618 and 1621, was an English philosopher and statesman who served as Attorney General and Lord Chancellor of England under King James I. Bacon led the advancement of both natural philosophy and the scientific method and his works remained influential even in the late stages of the Scientific Revolution.

Bacon has been called the father of empiricism. He argued for the possibility of scientific knowledge based only upon inductive reasoning and careful observation of events in nature. He believed that science could be achieved by the use of a sceptical and methodical approach whereby scientists aim to avoid misleading themselves. Although his most specific proposals about such a method, the Baconian method, did not have long-lasting influence, the general idea of the importance and possibility of a sceptical methodology makes Bacon one of the later founders of the scientific method. His portion of the method based in scepticism was a new rhetorical and theoretical framework for science, whose practical details are still central to debates on science and methodology. He is famous for his role in the scientific revolution, begun during the Middle Ages, promoting scientific experimentation as a way of glorifying God and fulfilling scripture.

Bacon was a patron of libraries and developed a system for cataloguing books under three categories – history, poetry and history.

Bacon was educated at Trinity College at the University of Cambridge, where he rigorously followed the medieval curriculum, which was presented largely in Latin. He was the first recipient of the Queen's counsel designation, conferred in 1597 when Elizabeth I reserved him as her legal advisor. After the accession of James I in 1603, Bacon was knighted, then created Baron Verulam in 1618] and Viscount St Alban in 1621.He had no heirs and so both titles became extinct on his death of pneumonia in 1626 at the age of 65. He is buried at St Michael's Church, St Albans, Hertfordshire.

Francis Bacon often gathered with the men at Gray's Inn to discuss politics and philosophy, and to try out various theatrical scenes that he admitted writing. Bacon's alleged connection to the Rosicrucians and the Freemasons has been widely discussed by authors and scholars in many books. However, others, including Daphne du Maurier in her biography of Bacon, have argued that there is no substantive evidence to support claims of involvement with the Rosicrucians. Frances Yates does not make the claim that Bacon was a Rosicrucian, but presents evidence that he was nevertheless involved in some of the more closed intellectual movements of his day. She argues that Bacon's movement for the advancement of learning was closely connected with the German Rosicrucian movement, while Bacon's New Atlantis portrays a land ruled by Rosicrucians. He apparently saw his own movement for the advancement of learning to be in conformity with Rosicrucian ideals.

Works:
Essays, 1597
Colours of Good and Evil, 1597
Meditationes Sacrae, 1597
The Proficience and Advancement of Learning, 1605, augmented and translated in Latin in 1623 as De dignitate et augmentis scientiarum
In felicem memoriam Elizabethae 1609
Novum Organum, 1620
Astrologia Sana, 1621
The New Atlantis, 1627

(source: Wikipedia)