Walsingham by Walter Ralegh (excerpts)

786,

Know that love is a careless child
    And forgets promise past,
He is blind, he is deaf when he list
    And in faith never fast.
His desire is a dureless content
    And a trustless joy
He is won with a world of despair
    And is lost with a toy.

Of womenkind such indeed is the love
    Or the word Love abused
Under which many childish desires
    And conceits are excused.

But true Love is a durable fire
    In the mind ever burning;
Never sick, never old, never dead,
    From itself never turning.