What's gone and what's past help Should be past grief.

Time flies, and what is past is done.

A word and a stone let go cannot be called back.

What is done, is done: Spend not the time in tears, but seek for justice.

The book of Nature is the book of Fate. She turns the gigantic pages-leaf after leaf-never re-turning one.

Of this I am quite sure, that if we open a quarrel between the past and the present, we shall find we have lost the future.

What's said is said and goes upon its way Like it or not, repent it as you may.

Of all sad words of tongue or pen, The saddest are these: It might have been!

The mill cannot grind with water that's past.