Dutt Drinking

So I've still only seen one Guru Dutt film, actually (Kaagaz Ke Phool), but when I came across this still, I found it captivating. The power and the drama of drink! (This still is from Pyaasa.) The luminescence appears from the bottom of the glass, washing him in light, but it only pushes the shadows to the edges, where they coalesce in dark regions, ready to take over the universe when the glass no longer reflects any light. It's why I--like the sarariman in Oshima's Cruel Story of Youth--drink a lot only when I'm happy, not when I'm depressed ...