I do not see what use a man can be put to, whose word cannot be trusted. How can a wagon be made to go if it has no yoke-bar, or a carriage if it has no collar-bar?
One should not injure, subjugate, enslave, torture, or kill any animal, living being, organism, or sentient being. Just as suffering is painful to you, in the same way it is painful, disquieting and terrifying to all animals, living beings, organisms and sentient beings.
Hanuman, the devotee of Rama, said: When I identify myself with the body, O Lord, I am Thy creature, eternally separate from Thee. When I identify myself with the soul, I am a spark of that Divine Fire which Thou art. But when I identify myself with the Atman, I and Thou art one.
You’re going to come across people in your life who will say all the right words at all the right times. But in the end, it’s always their actions you should judge them by.

