The quote draws a distinction between privacy and secrecy. The first part asserts a lack of hidden information. It implies honesty and transparency.
The second part explains the approach: keeping personal matters private. It suggests boundaries and a desire to safeguard personal life from unnecessary intrusion.
In essence, the quote communicates the speaker's choice to maintain privacy. It emphasizes a boundary between personal matters and public disclosure. It's a declaration of the speaker's desire to control who has access to their personal information.