Mercury trine or sextile Jupiter

Understanding and expression agree here, so learning is easy and teaching is natural. These people read widely, hold a subject in proportion, and explain complicated things to a beginner without condescension. Travel and study come up early and go well. Because the aspect asks nothing, the breadth can stay recreational: a well-informed person with no particular subject, comfortable in any conversation and expert in none. Jupiter rewards commitment to a body of knowledge, and an easy aspect supplies no reason to commit to one.