Fr. Aidan Kimel has a good post on the vice of acedia over at Eclectic Orthodoxy. I first learned of this particular vice about 1 1/2 years ago. My attention had been directed to a book from Ignatius Press: The Noonday Devil: Acedia, the Unnamed Evil of Our Times.
This is an excellent book which outlines the development of thought and approaches to acedia. It is very readable and quite interesting. The author, Jean-Charles Nault, O.S.B., begins by stating how he had somewhat taken knowledge of acedia for granted. This was due to it being part of his formation as a Benedictine via St. John Cassian and others. He wrote the above book as a response to no one outside of religious formation knowing anything about it, as well as seeing how prevalent it is in our day.
Recently, I have been starting to see more material being promoted on this subject. Last month my attention was brought to Acedia and Its Discontents: Metaphysical Boredom in an Empire of Desire.
Now Fr. Aidan introduces yet another book on this vice: Despondency: The Spiritual Teaching of Evagrius of Pontus.
It is good to see an increase in books and articles concerning acedia. It truly is one of the greatest plagues of modern man, as well as a subtle, potent, and tenacious destructive force in society. In addition to the Noonday Devil, which I have already had the pleasure of reading, I will be reading the other two books. It is something I encourage everyone to learn more about and to use these tools for serious self-examination.