““If there is something intangible about mental illness generally, depression is all the harder to define because it tends to creep in rather than announce itself, manifesting itself as an absence - of appetite, energy, sociability - rather than as a presence. There is little you can point to: no obscene rantings, no sudden flips into unrecognizable, hyper-energize behavior, no magical belief systems involving lottery numbers or fortune cookies. It seems to me that we are suspicious of depression’s claim to legitimacy in party because it doesn’t look crazy.””