Thanks for quotes Rustbucket.
Even at this late date in the war you can "hear" the determination to go on and not give up.
One thing that may have broken the resolve of the Confederate units in Texas at the end of the war was that large numbers of Confederate soldiers whose units surrendered further to the East were returning home in May. Why fight on when thousands of their compatriots had given up?
Some Texas units were assigned to protect Houston residents from possible looting by the returnees, but even those protecting units eventually dissolved of their own accord in late May. Travel on Texas roads was somewhat dangerous during this time.