Nonviolence is generally taken to mean not killing or destroying the body, but actually nonviolence means not to put others into distress. People in general are trapped by ignorance in the material concept of life, and they perpetually suffer material pains. So, unless one elevates people to spiritual knowledge, one is practicing violence. One should try his best to distribute real knowledge to the people, so that they may become enlightened and leave this material entanglement. That is nonviolence.
Tolerance means that one should be practiced to bear insult and dishonor from others. If one is engaged in the advancement of spiritual knowledge, there will be so many insults and much dishonor from others. This is expected because material nature is so constituted. Even a boy like Prahlāda, who, only five years old, was engaged in the cultivation of spiritual knowledge, was endangered when his father became antagonistic to his devotion. The father tried to kill him in so many ways, but Prahlada tolerated him. So, for making advancement in spiritual knowledge, there may be many impediments, but we should be tolerant and continue our progress with determination.
Simplicity means that without diplomacy one should be so straightforward that he can disclose the real truth even to an enemy. As for acceptance of the spiritual master, that is essential, because without the instruction of a bona fide spiritual master, one cannot progress in the spiritual science. One should approach the spiritual master with all humility and offer him all services so that he will be pleased to bestow his blessings upon the disciple. Because a bona fide spiritual master is a representative of Kṛṣṇa, if he bestows any blessings upon his disciple, that will make the disciple immediately advanced without the disciple's following the regulated principles. Or, the regulated principles will be easier for one who has served the spiritual master without reservation.