In ESB, there have been many of my mates saying that Yoda was inane, after hiding on swamp world for nearly three decades. The reason I believe Yoda acted crazy when Luke first arrived on Dagobah was in order to test Luke's patience. He wanted to see if Luke could stay ont he path of the Jedi. Even though Luke was impatient, Ben persuaded Yoda to train him.

My question to you all is, was Yoda actually crazy? Had living near a place strong with a darkside aura actually driven him partially insane?