Shakespeare's Sonnets: When to the sessions of sweet silent thought

When to the sessions of sweet silent thoughtI summon up remembrance of things past,I sigh the lack of many a thing I soughtAnd with old woes new wail my dear time's waste:Then can I drown an eye (un-us'd to flow)For precious friends hid in death's dateless night,And weep afresh love's long-since cancell'd woe,And moan th'expense of many a vanish't sight.Then can I grieve at grievances fore-gone,And heavily from woe to woe tell o'erThe sad account of fore-bemoanèd moan,Which I new pay, as if not paid before. But if the while I think on thee (dear friend) All losses are restor'd, and sorrows end.