Thinker... Creator... Astrophysicist!
When using a personal pronoun to refer to me in English, I prefer the pronoun he/him/his. I will not feel offended if you use himself, his greatness, sir, or another pronoun of your choice. But really, I have better things to do than worry about whether someone uses "preferred" gender pronouns instead of the singular "they" which has persisted as a natural gender-neutral pronoun in English since the 14th century.