Chruch of Knowledge
The church dedicated to Oghma is generally well thought of. Even in conflicts, all sides tend to spare these temples as the church normally remains neutral and will share its information with all who wish. However, some temples prefer to keep some secrets hidden, but no temple would ever tell you which temple does what.
A special case are Whispers who both work as spies for the church but also give information to those who seem worthy when they need it.
Few organizations can claim to house even a fraction of the information stored within the various libraries and temples dedicated to Oghma. And some of the knowledge stored there aren't books but powerful objects. It's not just out of respect that people are reluctant to attack these temples.