How can one who has not even learned how to express affection ever show tolerance? Tolerance expresses itself as non-violence, whereas intolerance manifests itself as violence. If you are not victorious in cultivating affection and tolerance, you will definitely meet failure in every area of this life. Worldly sadhana (spiritual practice) is the first stage. Those who do not successfully pass through that stage can never be eligible for yoga, devotion or knowledge.