Toleration assumes there is a conflict over something important, something that cannot otherwise be resolved through normal negotiation without resorting to war or violence. As political lecturer Catriona McKinnon explains, when it comes to questions like what is "the best way to live, the right things to think, the ideal political society, or the true road to salvation, no amount of negotiation and bargaining will bring them to agreement without at least one party relinquishing the commitments that created the conflict in the first place. Such conflicts provide the circumstances of toleration... are endemic in society." "The urgency and relevance of this issue is only too obvious: without tolerance, communities that value diversity, equality and peace could not persist (Vogt, 1997)."