There's a saying in some Indian languages, which I'll paraphrase: the tree which bears a lot of fruit is always bent over. In other words, the person (tree) with lots of knowledge (fruit) is humble (bent over).
Meaning: noble and virtuous persons are always humble and and are always committed to help others and compares them to a tree bowing down with the weight of its fruits. In contrast dull and foolish persons are always rigid and unadjusting like dried wood.
