Who wrote the following lines :
''Drive my dead thoughts over the universe
Like wither'd leaves to quicken a new birth!''?

Will take from both a deep, autumnal tone,
Sweet though in sadness. Be thou, Spirit fierce,
My spirit! Be thou me, impetuous one!

Drive my dead thoughts over the universe
Like wither'd leaves to quicken a new birth!
And, by the incantation of this verse.

Ode to the West Wind
By P. B Shelley.