The tragedy of growing old is not that one is old but that one is young.

The tragedy of old age is not that one is old, but that one is young

The error of youth is to believe that intelligence is a substitute for experience, while the error of age is to believe experience is a substitute for intelligence

An inordinate passion for pleasure is the secret of remaining young

To get back one's youth one has merely to repeat one's follies

How sad it is! I shall grow old, and horrid, and dreadful. But this picture will remain always young. It will never be older than this particular day of June. . . . If it was only the other way! If it was I who were to be always young, and the picture that were to grow old! For this--for this--I would give everything! Yes, there is nothing in the whole world I would not give!