Is Andrew Solomon's depression due to the ego?

[clouffy]

Again, because of the ego?

He puts it very beautifully in his ted talk on depression. So what is the root of his depression, and is it because of him identifying too much with the ego? Can his depression be justified? His depression seems so beautiful and real... and he does seem to have a life purpose! (compared to my petty depression and anxiety lol)

He's a man I respect. But I am still clueless about this thing called depression. Someone please explain.