Merrily We Roll Along

Merrily We Roll Along is a play by George S. Kaufman and Moss Hart, and a musical loosely based on it by Stephen Sondheim and George Furth.

From song lyrics

 * Every road has its turning,/that's the way you keep learning.

From dialogue

 * The worst vice in this world is advice, so I don't give any. - Franklin Shepard