What is theme and how does a reader discover theme?

What happens once in a minute twice in a moment and never in a thousand years?

Read this passage. my career in journalism has taught me the challenges of capturing sporting events, yet gregor powell's descriptions are flawless. powell is a gold-medal paralympic swimmer, but his memoir proves that his true strength is the power of his insights. what feature distinguishes this passage as a foreword?

What point was thomas paine trying to make by relating this antidote