O THOU which to search out the secret parts
Of the India, or rather Paradise
Of knowledge, hast with courage and advice
Lately launch'd into the vast sea of arts ;
Disdain not in thy constant travelling
To do as other voyagers, and make
Some turns into less creeks, and wisely take
Fresh water at the Heliconian spring.
I sing not, siren-like, to tempt, for I
Am harsh ; nor as those schismatics with you,
Which draw all wits of good hope to their crew ;
But seeing in you bright sparks of poetry,
I, though I brought no fuel, had desire
With these articulate blasts to blow the fire.
John Donne
http://www.poemhunter.com/poem/to-mr-samuel-brooke/