Why not refer to the obituary Marc Antony gives for Brutus in Julius Caesar as a model:
This was the noblest Roman of them all.
All the conspirators, save only he,
Did that they did in envy of great Caesar;
He only, in a general honest thought
And common good to all, made one of them.
His life was gentle, and the elements
So mix'd in him that Nature might stand up
And say to all the world, “This was a man!” (5.5.74-81)
Perhaps you can get started by writing something like this:
This was the most prescient playwright of them all,
All the others have envied of great Shakespeare
His wit, his insight, his understanding of man....
Continue with Shakespeare's attributes, one of which is his uncanny insight into human nature. [Reading some biographies and criticisms on the Bard will assist you.]