Buddhism - Am I Stupid?

Why is a person born stupid? This is because in the past, when you did not know something, you did not take the trouble to investigate what is wholesome and unwholesome. Another reason for stupidity could be due to fact that the person drank too much liquor. Why is a person born intelligent? Firstly, if he does not know something, he takes the trouble to ask and investigate. The other reason is that he avoids intoxicants like liquor or drugs. The third reason is that he meditates. We meditate to develop our mind. It brings us wisdom.