Alongside In Praise of Reason, the volume provides an afterword tracing Voltaire's intellectual relationships with Enlightenment thinkers and philosophers (including Locke, Diderot, Rousseau and Newton), containing research into his influences and economic attachments, a complete timeline of his life and works, a glossary of Enlightenment terminology, and a detailed index of all of Voltaire's writings. This edition translates In Praise of Reason into modern English while retaining the directness and momentum of Voltaire's satirical prose. The supporting material places In Praise of Reason within Voltaire's broader artistic and philosophical legacy and its later theological reception.
The writing is effusive and ornate, mimicking the high flown rhetoric of official eulogies, except the usual subject of praise (a recently deceased dignitary) is replaced with an abstraction. This clever twist allowed Voltaire to laud Enlightenment ideals under the pretext of a harmless compliment to an idea. At times, the Éloge carries a playful irony, as when "M. de Chambon" solemnly credits Reason for miracles far more impressive than any found in scripture. Yet for all the light touch, the sentiment is sincere: Voltaire truly is paying tribute to the power of critical thought to improve the human condition.