"Secrets can take many forms -- they can be shocking, or silly, or soulful." Frank Warren, the founder of PostSecret.com, shares some of the half-million secrets that strangers have mailed him on postcards.

Frank Warren: Half a million secrets

Half a million secrets

A heartfelt collection of half a million secrets reveals our deepest fears, joys, and human connections, shared anonymously.

Voice messages from loved ones, saved against the fear of loss, highlight the power of preserving personal moments in the digital age.

Revealing half a million secrets, from whimsical to profound, underscores the shared human condition and our secret lives.