“There is always some frivolity in excellent minds; they have wings to rise, but also stray.” (Joseph Joubert)
“You’re considered superficial and silly if you are interested in fashion, but I think you can be substantial and still be interested in frivolity.” (Sofia Coppola)
“If you compare it with philosophy, [fashion] is frivolous. But frivolity may be something good, something that is part of our lives. So I don’t dislike it. And what I like is the mix — that in your life you can have serious things, more frivolous ones. Fashion is about beauty and the search for beauty, I think it’s a fundamental thing. No one criticizes if you want to do beautiful homes. No one criticizes if you want to buy a beautiful chair. But so many intellectuals still criticize why you want to wear beautiful clothes, and it’s only our body, so it must be important in a way.” (Miuccia Prada)
“I think here's nothing wrong with being interested in frivolity, so long as it isn't your be-all and end-all. Physical things like fashion, architecture, design are important to me because they frame the life you lead - they're the backdrop and settings that intersect when you form an emotional attachment or memory in association with them.” (Lin, out-of-the-bag.blogspot.com)
(quotes extracted from a fellow blogger here)