Because if you accept that you lied, people are going to know that your are not honest. All people want to be accepted by society, and lies have bad reputation among others. So, this lacking of honesty will make you vulnerable and possible you could be rejected socially.
Answer: Let’s say someone is giving you detailed directions “hey can you help me find where Max’s diner is?” -johns “yeah, you make a left on 76th go straight on the third traffic light make a right on simmons ave and I’ll be in the left side” -Alex.
because he is talking about the future of this country and he states here "And so, my fellow Americans: ask not what your country can do for you—ask what you can do for your country."