As it stands in Star Wars canon, Yoda never fell to the dark side ... which leads into his training of Luke Skywalker and ultimately his death in Return of the Jedi. However, there’s a period ...

“Death is a natural part of life ... Be a candle, or the night.” —Star Wars: Yoda: Dark Rendezvous 30. “To answer power with power, the Jedi way this is not. In this war, a danger there ...