Possible Clues:

• Has a reputation for exposing type of philosophy that's not in favour of cover-up
• Naturism
• Philosophy of bare existence?
• Practice of wearing no clothes
• Gymnosophist's practice
• Activity in which nothing is going on?
• Has a reputation for exposing type of philosophy that's always revealing
• A desire to expose acts from music stand
• Practice of staying in one's birthday suit
• Naturist's practice