Where does giving your pen as a sign of respect come from In the movie A Beautiful Mind the professors in the tea room gave John Nash their pens as a sign of respect and acceptence?

The act of giving a pen as a sign of respect originates from various cultural practices that symbolize trust and the transfer of knowledge or authority. In "A Beautiful Mind," the professors offering their pens to John Nash signifies their acknowledgment of his intellect and contributions to mathematics. This gesture represents acceptance into their academic community, recognizing Nash's brilliance despite his struggles. The pen, as a tool for writing and creating ideas, embodies the respect they have for his potential and insights.