I was so full of sleep at the time that I left the true way.
He who know most grieves most for wasted time.
The wisest are the most annoyed at the loss of time.
Everywhere is here and every when is now.
... Nessun maggior dolore Che ricordarsi del tempo felice Nella miseria. (There is no greater pain than to remember a happy time when one is in misery.)
There is no greater sorrow than to recall a happy time in the midst of wretchedness.
There is no greater sorrow than to be mindful of the happy time in misery.