https://en.wikipedia.org/wiki/Calling_Occupants_of_Interplanetary_Craft

In your mind you have capacities you know
To telepath messages through the vast unknown
And one night we'll make a contact with you
And please come in peace, we beseech you
Only a landing will teach them
Please interstellar policeman
And transmit thought energy far beyond the norm
We declare world contact day
Calling occupants of interplanetary, anti-adversary craft
We are your friends