Frog in a Well

From their website:

The “Frog in a Well” project and its blogs are named after an old Chinese proverb (井底之蛙), variations of which can also be found in the Japanese and Korean languages. The story originally appears in the writings of Zhuangzi, one of the founders of the Daoist religion (In the Burton Watson translation of his Basic Writings the story can be found in Section 17 “Autumn Floods” on pages 107-8). A frog tries to convince a turtle to join him in his wonderful well, of which he is a master. After trying to get in and getting stuck, the turtle withdraws and tells the frog instead of how deep and wide the sea is. The frog is left dumfounded. The proverb which grew out of this Daoist fable has come to represent limited vision and even ignorance—of not being able to see outside one’s own immediate environment.