From which person have I learned most in my life?

There are lots of people from which I have learned things, like my friends and relatives, but the person I most learned from is my grandfather, because he has lived nearly 70 years, and he have a lot of experience. He often help me with manual homeworks, he teach me how to do them, and the things that I need for doing them. He buy the stuffs that I need for school, he fix my things, he taught me how to swim and dive, how to behave properly, he taught me lots of sports and physical excersices, and even more things. I think that I couldn't know all the things I know without him.