Life is full of new learning’s and teachings, we learn many things from the experience we get everyday and we even teach many by our action without any intention. Everyone we see in our life will be teaching us something or the other and many of them will be learning something from us.
Learning is an important phase of our life and we do it from our start of life till the last moment of our life. No one is greater than you because you are unique and you know something which others don't know. We cannot measure two people with any test or physical fitness. No one is lesser than you because even we learn something from a small kid. So don't degrade anybody.
We were born as a baby and get mature as we pass every day, that does not mean that we know fully about the period of being a baby. We should never feel degraded or humiliated to learn from small kids as they might even know many things. At the same time we should never insult any elder that they don't know something that we know.
Never hesitate or insult a person when they come to you for a help in learning something, instead just teach them without showing facial expression. We are only going to gain by sharing our knowledge and not going to loose anything. If you give $1 to a person you loose $1 and the other person gains $1 but when you teach a person with something that makes both of them remain with 1 thing learned, so always be a good teacher and someone in the world would be a good teacher to you.
As Issac Newton quoted,
“What we know is a drop, what we don't know is an ocean.”
So never have a conceit that you know everything than others as there are more people out who knows something more than you. Never feel inferior that you don't know something comparing yourself to a person as you will certainly know something than the other person in some other field.
Never judge a person by his looks as Jack fruit is rough outside but it is sweet inside. Never underestimate a person by testing in one field as that does not totally reveal about the person. We can personify this to conducting a flying test between a fish and an eagle.
Life is full of learning and teaching and make yourself happy by providing your teaching to others and learning from them.