a man sitting on the steps of a building

I took this photo just few walks from the office where I am working. I have the camera in my bag and just walked nearby this person just sitting in the sidewalk. I thought of it’s kinda intriguing. I don’t have any idea of what he was doing but I knew he’s a perfect subject in a photo. Maybe this person is resting from his work or just thinking of something. So I took my camera and waited for the perfect timing.