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the philosophy of the European Enlightenment

self-improvement book

Beginning a brief letter

this will just be a short note; I'm writing to tell you

enlightenment movement; the Enlightenment

revealed religion

enlightenment movement; the Enlightenment

enlightened despot

public awareness (e.g. publicity and education campaigns aimed at improving the health, environment, etc.)

return to the palace (usu. of the empress, crown prince, etc.)

salutation at the end of a formal letter

to enlighten; to edify

enlightened absolutist