Why Do We Write Dedications in Books?

When my siblings and I were clearing out my dad’s bookshelves (he died earlier this year), I made sure to keep any books in which I’d written a personal dedication to him. For some reason I baulked at the idea of them passing into the hands of strangers, or just being left to languish in the anonymous corners of charity bookshops. Worse than that would have been copies of my own novels, dedicated on the title page to ‘Dad’. (‘So even his own father didn’t bother keeping them…’)