diff --git a/src/aphorisms/thirty_six.clj b/src/aphorisms/thirty_six.clj
new file mode 100644
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--- /dev/null
+++ b/src/aphorisms/thirty_six.clj
@@ -0,0 +1,93 @@
+(ns aphorisms.thirty-six
+  (:require [quil.core :as q]
+            [quil.applet :as qa]
+            [quil.middleware :as qm]
+            [thi.ng.geom.rect :as r]
+            [thi.ng.geom.core :as g]
+            [thi.ng.geom.line :as l]
+            [thi.ng.math.core :as m]
+            [thi.ng.geom.vector :as v]
+
+            [heyarne.line-us.connection :as line-us]
+            [heyarne.line-us.gcode :as gcode]
+            [heyarne.line-us.helpers :as lh]))
+
+;; apostolos' birthday present
+
+(def bounds (g/scale (r/rect [218 342]) 2))
+
+(def tau (* Math/PI 2))
+
+(def line-spacing 10)
+(def off-y 10)
+
+(def padding 20)
+
+(def lines
+  (->>
+   (for [y (range (+ (r/bottom bounds) padding)
+                  (inc (- (r/top bounds) padding)) line-spacing)
+         :let [pos (/ (+ 1 (Math/sin (/ (g/height bounds) tau))) 2)
+               x-off (+ (r/left bounds) (* pos (g/width bounds)))]]
+     (l/linestrip2 [(+ (r/left bounds) padding) y] [x-off (+ y (* (Math/sin (* tau (/ (- y (+ (r/bottom bounds) padding)) (- (g/height bounds) padding)))) off-y))] [(- (r/right bounds) padding) y]))
+   (into [])))
+
+(defn pad [rect p]
+  (let [p (v/vec2 p)]
+    (-> (update rect :p #(g/translate % p))
+        (update :size #(g/translate % (m/* p -2))))))
+
+;; single circle
+#_(def paths [[{:shape (c/circle (g/centroid bounds) 200)}]])
+
+;; generated scene
+
+(comment
+  ;; plot currently visible scene
+  (with-open [line-us (line-us/connect "line-us.fritz.box" 1337)]
+    (line-us/send-command! line-us "G94 S2")
+    (doseq [#_#_coords (into [] cat (gcode/scene->gcode-seq [bounds])) ;; for calibration
+            coords (->> (gcode/scene->gcode-seq [lines])
+                        (into [] cat)
+                        #_(lh/rescale bounds))
+            #_#_coords (->>
+                      (into [] (comp cat
+                                     (map :shape)
+                                     (map #(update % :p v/vec2))) ;; this is required because of a bug in the reader
+                            paths)
+                      (gcode/scene->gcode-seq)
+                      (into [] cat)
+                      #_(lh/rescale (r/rect [700 -1000] [1800 1000])))]
+      (line-us/send-movement! line-us coords)))
+  )
+
+(defn setup []
+  (q/ellipse-mode :center)
+  (q/rect-mode :corners)
+  (q/color-mode :hsb 255)
+  {})
+
+(defn draw-state [_]
+  (q/with-translation (m/* (:p bounds) -1))
+  (q/background 255)
+  (q/no-fill)
+
+  (doseq [l lines
+          [[x1 y1] [x2 y2]] (partition 2 1 (g/vertices l))]
+    (q/line x1 y1 x2 y2))
+
+  #_(doseq [path paths
+               {{[x y] :p r :r} :shape} path]
+         (q/ellipse x y (* 2 r) (* 2 r)))
+  #_(qd/draw-scene! scene))
+
+#_:clj-kondo/ignore
+(q/defsketch thirty-six
+  :title "Thirty-Six"
+  :size (:size bounds)
+  :settings #(q/pixel-density (q/display-density))
+  :features [:keep-on-top]
+  :setup setup
+  :update identity
+  :draw draw-state
+  :middleware [qm/pause-on-error #_(screenshottable) qm/fun-mode])