"À celui qui a la foi, aucune explication n'est nécessaire. À celui qui n'a pas la foi, aucune explication n'est possible."

Simplified Meaning:

When someone truly believes in something, they don't need a lot of reasons or detailed explanations to support their belief. For instance, think about a person who really loves gardening. They know, deep down, that planting and caring for their flowers will bring joy and beauty, so they don't need anyone to convince them or explain why they should do it. Their trust in the process is enough. On the other hand, if someone doesn’t believe in something, no amount of explanation will make them understand or accept it. Imagine trying to explain the joy of gardening to someone who doesn't believe plants make a difference, no matter how many benefits you describe, such as cleaner air or lovely landscapes. They might just shrug it off because they lack the faith to see the value in it. This saying teaches us that belief and trust often come from within, and while you can share your thoughts with others, sometimes their belief has to come from their own experiences and perspectives. If you understand this, you won’t get frustrated trying to convince people who aren’t ready to believe. Instead, share your passion and let them discover their understanding in their own time.