Bertrand Russell said:
"I never know whether I should say "Agnostic" or whether I should say "Atheist". It is a very difficult question and I daresay that some of you have been troubled by it. As a philosopher, if I were speaking to a purely philosophic audience I should say that I ought to describe myself as an Agnostic, because I do not think that there is a conclusive argument by which one prove that there is not a God. On the other hand, if I am to convey the right impression to the ordinary man in the street I think I ought to say that I am an Atheist, because when I say that I cannot prove that there is not a God, I ought to add equally that I cannot prove that there are not the Homeric gods."
Anthony Kenny, philosopher and retired President of the British Academy:
"My reaction to the difficulty of either proving or disproving God's existence is agnosticism: to say that we do not know either way. Often both theist and atheist philosophers, instead of offering arguments, adopt a strategy that might be called grabbing the default position - that is, a tactic of throwing the burden of proof on the opponent."
To most people I'm an atheist. However when pushed in an intellectual discussion I admit to being 95% atheist and 5% agnostic or an agnostic with extreme atheist leanings.
What are you?
Alex's Heresies - Embracing a Physical Reality