I found this quote in the book "At the Existentialist Cafe" by Sarah Bakewell, but I cannot find a confirmation of its authenticity anywhere else on the internet. Perhaps it's a unique translation?
I am a psychological and historical structure. Along with existence, I received a way of existing, or a style. All of my actions and thoughts are related to this structure, and even a philosopher’s thought is merely a way of making explicit his hold upon the world, which is all he is. And Yet, I am free, not in spite of or beneath these motivations, but rather by their means. For that meaningful life, that particular signification of nature and history that I am, does not restrict my access to the world; it is rather my means of communication with it
The Phenomenology of Perception