For grief is felt not so much ...

For grief is felt not so much for the want of what we have never known, as for the loss of that to which we have been long accustomed.
 Pericles

Quotes from the same author

Time is the wisest counsellor of all.
 Pericles
In private matters everyone is equal before the law. In public matters, when it is a question of putting power and responsibility into the hands of one man rather than another, what counts is not rank or money, but the ability to do the job well.
 Pericles
Not to be able to bear poverty is a shameful thing, but not to know how to chase it away by work is a more shameful thing yet.
 Pericles
Although only a few may originate a policy, we are all able to judge it.
 Pericles
Freedom is the sure possession of those alone who have the courage to defend it.
 Pericles