Here are some minimalist portraits of some of my favourite philosophers that I've made in the last couple of years using a printed photo and a sharp knife. Pretentiously/jokingly, I call the series 'Necessary and Sufficient Conditions', since the idea is to include as little as possible in the portrait while still making it work as a representation. Because I've received several requests, I've decided to make them available for public use. To see a version with a proper resolution, click on the gallery picture (Weebly galleries are annoyingly fuzzy, sorry!). Because they're so minimalistic, these pictures are suitable for mugs, t-shirts, stickers, slides, or even stencils for graffiti (that's how I destroyed my Marx before taking a proper photo...). Many of these things can be ordered from an online photo service. In my experience, they make it easy for you to print your own photo on just about anything these days. Needless to say, please don't use the pictures without proper attribution or for financial gain - and maybe send me a picture of what you've done!