Joseph grimaced, and looked towards Master Mois, though he could not meet his eyes.

[i]If he trusted me, he would have told me what the potion really was. If he trusted me, then he would tell me what he intends to do with Leader Schumann instead of leaving it in the dark. I have followed every command and request he has given me since he's come of age, and he still does not trust me, not really[/i], Joseph thought, just a touch of resentment in his head. He had no choice but to trust the human completely, unquestioningly, and it would have been nice to receive the same. But he was only a slave after all, and he knew that it was wrong for him to feel such things. It was the function of a slave to give of themselves completely, and to expect nothing in return. That Master Alexi did love and care for him, and that he trusted him at least slightly, should have been enough for Joseph, and he knew that. But his words primarily focused on Master Mois' emotions.

“First of all, Master Alexi does not trust me, not really. As you've pointed out, he's told you parts of the plan that he has not told me. Secondly, trust should not come from giving into another person's will or constantly doing what they ask of you. If it were even true that he did not trust you because you do not follow his every whim and request, then that would be his failing, not yours. But really, I think he trusts you as much as he is capable of trusting anyone.” 

The vampire servant wished more than anything that Master Alexi would see what his secrecy was doing to Master Mois. Even if he was going to make Joseph tear his hair out, it was far worse to do that to your own brother than to a slave.