In "Old Yeller", why did Travis want to "get out of sight in a hurry"?

Travis wanted to get out of sight because he didn't want Burn Sanderson to catch him crying.

I didn’t wait to hear any more. Iran off. Iwas so full of relief that Iwas about to pop. I knew that if I didn’t get out of sight in a hurry, this Burn Sanderson was going to catch me crying.