Toleration is the practice of deliberately allowing or permitting a thing of which one disapproves. One can meaningfully speak of tolerating, ie of allowing or permitting, only if one is in a position to disallow. It has also been defined as "to bear or endure" or "to nourish, sustain or preserve". Toleration may signify no more than forbearance and the permission given by the adherents of a dominant Belief for another Belief to exist, even though the latter are looked on with disapproval as inferior, mistaken or harmful.
Without Tolerance and Forgiveness, we are as good as mechaninical robots following preset lines of codes.