There is a saying in Sanskrit that translates as "Knowledge brings humility." The opposite would be that only  an ignorant person would be proud or arrogant. A person becomes overconfident about himself or what he has. He starts thinking lowly of others. Only a harsh experience makes him see his stupidity. 
There is a story about the God of riches who was drunk on his wealth. He invited all the other gods to a grand feast so that his wealth would be seen by them. He also invited Shiva and Parvati. They gently told him they would not be able to come. They said their son Ganesha would come instead. 
The host welcomed his guests. Ganesha also arrived. The guests seated in a dazzling hall ate their fill of the lavish food. They praised the food, the hospitality and took leave impressed by the grandeur of everything there. 
But Ganesha was still being served. The host was stunned to see the servants running frantically to serve at the little boy's speed of eating. The cooks were preparing more The puzzled King saw to it that Ganesha was served what he wanted. 
Then word came from the kitchen that supplies were needed. Soon the supplies in adjacent villages were empty. Ganesha in anger chased the King till he ran to Shiva's abode. Ganesha complained he was not fed. The King realized his foolishness trying to impress the Lord and Mother with his riches. He went humbled, not able to feed one child. 
Hence how much ever one possesses one must not think lowly of others. The right kind of knowledge makes a person more and more humble. Like the tree full of fruits bends lower and lower.

The true teacher is never egoistic of having much knowledge. He or she never had a pride of his knowledge

 Butt down to earth to share his knowledge and think for the betterment of his students.  We must not be jealous of someone who is more better than us. The world is cruel to us and we may find difficult at every step of our lives but it's our own choice to let it go or stick to it and work on it with dedication and passion

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