It's a lot easier to be lost than found. It's the reason we're always searching and rarely discovered--so many locks not enough keys.

This quote is suggesting that it is much easier to get lost or not be found than it is to be found or discovered. The metaphor of locks and keys is used to emphasize this point, as it suggests that there are a lot of locks or obstacles that need to be opened in order to be discovered or found, but there are not enough keys or solutions to open all of them.