"Love is not love which alters when it in alteration finds, or bends with the remover to remove: O no! It is an ever-fixed mark that looks on tempests and is never shaken. It is the star to every wandering bark, whose worth's unknown, although his height be taken." 

"Love alters not with [time's] brief hours and weeks, but bears it out even to the edge of doom." 

Thank you Mr. Shakespeare. You really are timeless.