This truth—to prove, and make thine own: ‘Thou hast been, shalt be, art, alone.’ - Matthew Arnold

We are here on earth to do good to others. What the others are here for, I do not know.

"Up the still, glistening beaches,
Up the creeks we will hie,
Over banks of bright seaweed
The ebb-tide leaves dry.
We will gaze, from the sand-hills,
At the white, sleeping town;
At the church on the hill-side — And then come back down.
Singing: "There dwells a loved one,
But cruel is she!
She left lonely for ever
The kings of the sea.

(from poem 'The Forsaken Merman')

It is a very great thing to be able to think as you like; but, after all, an important question remains: what you think.