“Truth in philosophy means that concept and external reality correspond.”

Simplified Meaning:

When we say something is true in philosophy, it means that what we think in our minds matches what actually happens in the real world. For example, if you say, "The sky is blue," this idea is true because when you look up, you see a blue sky. Your thought and the actual sky are in agreement. Imagine you have a map to get to a friend's house. If the map accurately shows all the streets, turns, and landmarks, and you get to the right place by following it, then the map is true. Your understanding of the map matches the real roads and locations outside. Philosophers want our ideas and beliefs to be like good maps, where what we think is true lines up with how things really are outside our minds. If you believe hard work leads to success, and you see that people who work hard usually succeed, then your belief fits with reality. Following this idea, you should check whether your thoughts are in sync with what happens outside. If they do, you can count on them. This helps you make good decisions, like making sure your idea of saving money for the future truly helps you when that future comes.