衰老不得，智慧不得不得。

Don't get older, get wiser.

Source: Tatoeba

Sentence Composition

1 衰老 shuāilǎo
  1. to age
  2. to deteriorate with age
  3. old and weak
=2 不得 bùdé
  1. must not
  2. may not
  3. not to be allowed
  4. cannot
=2 不得 bude complement placed after a verb to express impossibility or inability; cannot; be unable to
3 智慧 zhìhuì wisdom; intelligence
4 不得不 bùdébù
  1. have no choice or option but to
  2. cannot but
  3. have to
  4. can't help it
  5. can't avoid
=5 得 dé
  1. to obtain
  2. to get
  3. to gain
  4. to catch (a disease)
  5. proper
  6. suitable
  7. proud
  8. contented
  9. to allow
  10. to permit
  11. ready
  12. finished
=5 得 dè used in 得瑟 dèse
=5 得 de structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc
=5 得 děi
  1. to have to
  2. must
  3. ought to
  4. to need to