“For more, you can refer to his books or speeches directly.”

Simplified Meaning:

Sometimes, when you want to learn more about a topic, it's best to go straight to the source. Imagine you want to know how to bake cookies. Instead of asking a friend who's never baked before, you would read a recipe book written by a famous chef or watch a video where they explain exactly how to do it. This way, you get the information directly from someone who really knows what they're talking about. If a person has written books or given speeches about something, that's a lot of valuable knowledge they have shared. Think about someone like Martin Luther King Jr. If you want to understand his ideas and beliefs deeply, you would read his speeches or books rather than just reading summaries or brief articles about him. Going directly to the original source helps you understand the true, detailed message without anyone else changing it or leaving important parts out. It's like drinking water straight from a clean, fresh spring instead of sipping from a glass where the water has been sitting out all day. When you want clear, accurate information, find the best source and go to it firsthand.