Ecclesiastes 1:8 in the World English Bible
All things are full of weariness beyond uttering. The eye is not satisfied with seeing, nor the ear filled with hearing.
Context
7 All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again.
8 All things are full of labour; man cannot utter it: the eye is not satisfied with seeing, nor the ear filled with hearing.
9 The thing that hath been, it is that which shall be; and that which is done is that which shall be done: and there is no new thing under the sun.