Porta Lucis — The Gate of Light
Source
Joseph Gikatilla, Sha'are Orah (Gates of Light), c. 1290. Porta Lucis, 1516.
The trail
Bruno Eroici Furori → Kabbalists' death by kisses → Gikatilla's ten gates
The passage
The last gate has no door. You do not pass through it. You become it.
Ten gates. Ten names. Each one a threshold where you leave something behind. The scholar points at the diagram but the diagram is pointing back at him.
Woodcut from Paulus Ricius’s Latin translation, 1516.