To grow a philosopher's beard.
You may suppress natural propensities by force, but they will be certain to re-appear.
Desiring things widely different for their various tastes.
Let not a god interfere unless where a god's assistance is necessary. [Adopt extreme measures only in extreme cases.]
Mountains will go into labour, and a silly little mouse will be born.
While we're talking, envious time is fleeing: pluck the day, put no trust in the future