“It is more shameful to distrust ones friends than to be deceived by them.” Francois duc de la Rochefoucauld
What this quote means is that not trusting those around you is a much worse offense than to have them deceive you. It is about having faith in those who have earned the right to be part of your inner circle. If you cannot trust a person, he or she should not be part of your inner circle, should not be a friend.
Friendship automatically signifies trust. Distrusting friends before they have proven they can’t be trusted is a very serious offense. It means that you have not truly accepted that person into your heart as a friend.
If you are deceived by someone you consider a friend, then the remedy, depending on the circumstance and their ability to earn your trust again, is to break the friendship. If you distrust them, you are treating them as a stranger. You are not giving them the honor that friendship entails.