Every beautiful thought is a teacher; every noble line speaks to the brain and heart. How does Ingersoll's metaphor "Every beaut
iful thought is a teacher" affect the meaning of the interview? It suggests that a playwright's words can inspire an audience to think about social issues. It indicates that a playwright gives clues about what will happen next in the play. It conveys the idea that people can learn from the thoughts they have. It implies that a playwright makes direct statements about social issues.
Ingersoll's metaphor "every beautiful thought is a teacher" affects the meaning of the interview in the following way:
It conveys the idea that people can learn from the thoughts they have.
Ingersoll is talking about the effect a play can have on an audience, and since a play is a form of art and it can make people think and reflect upon countless topics and issues, it can also lead people to have beautiful thoughts and consequently learn from them, since those thoughts are teachers in Ingersoll's point of view.
If you have money to spend after paying taxes and all expenses, you have spending power according to the amount of money you have left over. A tourist with spending power has money to spend after all travel expenses are paid or accounted for.