You're only young once, but you can be immature forever.

To me - old age is always ten years older than I am.

Weak withering age no rigid law forbids. With frugal nectar, smooth and slow with balm, The sapless habit daily to bedew, And give the hesitating wheels of life Gliblier to play.

At middle age the soul should be opening up like a rose, not closing up like a cabbage

I saw Hamlet Prince of Denmark played; but now the old plays begin to disgust this refined age.

In every age and clime we see, / Two of a trade can ne'er agree.