Authors:

If he must be alone, he would make solitude his armor.

George R. R. Martin (2011). “A Game of Thrones 4-Book Bundle: A Song of Ice and Fire Series: A Game of Thrones, A Clash of Kings, A Storm of Swords, and A Feast for Crows”, p.169, Bantam
If he must be alone, he would make solitude his armor.