Not just a discovery but an orientation

At 2am on October 12th, 1492, Columbus (or one of his crew members) spotted an island in the New World, the first documented sighting by Europeans of North America since the Vikings half a millineum before.

Columbus
by Joaquin Miller

Behind him lay the gray Azores,
Behind the Gates of Hercules;
Before him not the ghost of shores,
Before him only shoreless seas.
The good mate said: "Now we must pray,
For lo! the very stars are gone.

Brave Admiral, speak, what shall I say?"
"Why, say, 'Sail on! sail on! and on!' "

"My men grow mutinous day by day;
My men grow ghastly wan and weak."
The stout mate thought of home; a spray
Of salt wave washed his swarthy cheek.
"What shall I say, brave Admiral, say,
If we sight naught but seas at dawn?"
"Why, you shall say at break of day,
'Sail on! sail on! and on!' "

They sailed and sailed, as winds might blow,
Until at last the blanched mate said:
"Why, now not even God would know
Should I and all my men fall dead.
These very winds forget their way,
For God from these dead seas is gone.
Now speak, brave Admiral, speak and say" --
He said, "Sail on! sail on! and on!"

They sailed. They sailed. Then spake the mate:
"This mad sea shows his teeth tonight.
He curls his lip, he lies in wait,
With lifted teeth, as if to bite!
Brave Admiral, say but one good word:
What shall we do when hope is gone?"
The words leapt like a leaping sword:
"Sail on! sail on! sail on! and on!"

Then pale and worn, he kept his deck,
And peered through darkness. Ah, that night
Of all dark nights! And then a speck --
A light! a light! at last a light!
It grew, a starlit flag unfurled!
It grew to be Time's burst of dawn.
He gained a world; he gave that world
Its grandest lesson: "On! sail on!"