Doubtless a good general rule for close friendships, where confidences are freely exchanged, is that what one is not informed about, one may not inquire about.
Confidence Quotes
It is courage based on confidence, not daring, and it is confidence based on experience.
Confidence in an unfaithful man in time of trouble is like a broken tooth, and a foot out of joint. (Proverbs 25:19)
Kindness in words create confidence. Kindness in thinking creates profoundness. Kindness in giving creates love.
Experience tells you what to do; confidence allows you to do it.
A good leader inspires people to have confidence in the leader, a great leader inspires people to have confidence in themselves.
Confidence contributes more to conversation than wit.
I have the most perfect confidence in your indiscretion.
The confidence of ignorance will always overcome the indecision of knowledge.
Trust thyself: every heart vibrates to that iron string.