Sincerity

"Whatever we do we must do with sincerity, and that in itself will help to safeguard us. We must be sincere. Sincerity, humility, and tolerance are the necessary qualifications to receive transcendental knowledge. First is sincerity. With sincerity we can get everything, but we really must be sincere, otherwise the results will not come. An analogy has been mentioned that as good steel is necessary to make a good weapon, similarly real sincerity is necessary to make a real devotee. Sincerity is the steel of the devotee.
We must offer ourselves with our full sincerity. We shall also try to adopt the qualities of humility, tolerance, and giving honor to others."
Srila Bhakti Sundar Govinda Dev-Goswami Maharaj