Oliver Wendell Holmes, Sr. (c. 1809-1894)
“The young man knows the rules, but the old man knows the exceptions.”
- From a Valedictory Address by Oliver Wendell Holmes, delivered to the graduating class of the Bellevue Hospital College on March 2, 1871.










![Lewis & Clark [and Sacagawea] at Three Forks, painted by Edgar Samuel Paxson (1852–1919)](https://i0.wp.com/thehistorianshut.com/wp-content/uploads/2020/05/Lewis-Clark-and-Sacagawea-at-Three-Forks-painted-by-Edgar-Samuel-Paxson-1852%E2%80%931919-Public-Domain-via-Creative-Commons.jpg?resize=100%2C70&ssl=1)

