This sentence comes from Tagore's Birds, a poem written by him. In this poem, Tagore uses the image of waves to express the philosophy of life. Waves represent the challenges and tests in life. They will send off those who bravely face difficulties and firmly pursue their goals, and also send off those who drift with the tide and have no direction.

this sentence means that the ship of life needs firm faith and courage to face the challenges of the waves, so that it can ride the wind and waves in the vast ocean and meet a new journey. However, those canoes have no clear goal and direction, so they are easily swallowed up by the waves and cannot escape the fate of being buried at the bottom of the sea.

Therefore, this sentence conveys a positive outlook on life and the spirit of facing difficulties bravely. In the face of the challenges of life, we should be as firm in our beliefs as a ship, and go forward bravely in order to meet success and growth. At the same time, we should also avoid going with the flow and keep a clear mind and goals in order to avoid failure and extinction.