Si-cology 1: Tales and Wisdom from Duck Dynasty's Favorite Uncle is an autobiography by American television personality Silas Robertson, co-written by Mark Schlabach.

[3] On September 27, 2016, it had a Christian follow-up titled Si-renity: How I Stay Calm and Keep the Faith.

[4] The book became a New York Times Best Seller, and Publishers Weekly wrote "The Duck Dynasty empire rolls on.

Si Robertson, a member of the extravagantly bearded Robertson clan, who struck it rich in the duck call business and then got famous thanks to a reality TV show, is the latest member of the family to hit the bestseller lists.

"[5][6][7] The book was positively received and became recommended reading by Entertainment Weekly and PopSugar.