Basically this puzzle is just a rebus with the solution always being a philosopher. But be warned: You will have to think out of the box sometimes.
|w → f|
|y → r|
|a → y|
|s → y|
New puzzles appear Mondays. The solution will be online when a new puzzle appears. Just click one of the pictures to get to the homepage of the philosopher in question. You can also hover with your mouse over the pictures to see what they individually mean.