Although he was 70 years old when he retired, Ehresmann did not give up lecturing for at this time he moved to Amiens, where his second wife was a professor of mathematics, and he taught there.
Kahit na siya ay 70 years old kapag siya ay nagretiro, Ehresmann hindi bigyan up lecturing para sa oras na ito siya inilipat sa Amiens, na kung saan ang kanyang ikalawang asawa ay isang propesor ng matematika, at siya nagtuturo doon.