You have to assert something ...

You have to assert something about yourself in order to be yourself.
 Dennis Potter

Quotes from the same author

It is a dangerous thing to have instant access to your emotions.
 Dennis Potter
The trouble with words is that you never know whose mouths they've been in.
 Dennis Potter
I also believe in cigarettes, cholesterol, alcohol, carbon monoxide, masturbation, the Arts Council, nuclear weapons, the Daily Telegraph, and not properly labeling fatal poisons, but above all else, most of all, I believe in the one thing that can come out of people's mouths: vomit.
 Dennis Potter