Myers-Briggs would say that you are an INTJ (Introvert, Intuitive, Thinker, Judger). In Star Trek language, you share a basic personality configuration with Jean-Luc Picard and Seven of Nine.
People like you are generally autonomous, aloof, and intellectual. You sometimes give the impression you have no need of others, but you're intensely curious and driven to learn. You're cautious with others socially and respond best to people who don't push you to be friendly or affectionate. You appreciate when others follow your lead and accept your criticism in the helpful spirit in which it is intended. You're calm by nature and feel off-balance when confronted by highly emotional people.
You're highly organized and expect the same of others. [Ha, the quiz writers clearly have not seen my residence nor my office.] You analyze automatically and enjoy seeing patterns and trends. When your mind is made up, that's it, which means that while you're definitive and strong, you can be stubborn and arrogant. [Hmm, well, they did get that sentence thoroughly right.]
You respond best to other people's needs when they tell you about them clearly. You value honesty greatly. You prize people who listen to you and respect your ideals. You are somewhat contemptuous of those who don't pay attention to what you say.
You're a conservative dresser, but you have a unique and personal style.
Your primary goal in life is achieving independence and being able to live according to your own standards. Your reward is continual expansion of your competence and knowledge.
Good careers for your type include being a starship captain, intellectual property attorney, news analyst, design engineer, software developer, inventor, Webmaster, architect, and ex-Borg.
Aside from the nonsense about me supposedly being organized, that was quite an accurate description of me really.
Take the Star Trek Personality Test.