Donald Knuth 2013-05-21-10.27.42

2013-05-24-16.10.452013-05-24-16.19.292013-05-21-10.27.422013-05-21-10.28.052013-05-21-10.31.112013-05-21-10.33.492013-05-21-10.58.04
2013-05-21-10.27.42

[ small | medium | large ]