"To each his suff'rings: all are men,
Condemn'd alike to groan,
The tender for another's pain;
Th' unfeeling for his own.
Yet ah! why should they know their fate?
Since sorrow never comes too late,
And happiness too swiftly flies.
Thought would destroy their paradise.
No more; where ignorance is bliss,
'Tis folly to be wise. "
The final stanza of, Ode on a Distant Prospect of Eton College
By Thomas Gray
From...
http://www.poetryfoundation.org/poem/173566