I'll give you a hint, it's not Evangelion.
It actually came from a little known poem called "Pippa Passes" by a poet named Robert Browning. Here's the part with the famous phrase in it if you're interested.
The year’s at the spring,
And day’s at the morn;
Morning’s at seven;
The hill-side’s dew-pearled;
The lark’s on the wing;
The snail’s on the thorn;
God’s in His heaven— All’s right with the world