THE EXPRESSION OF BASIC GOODNESS is always connected with gentleness - not feeble, lukewarm, milk-and-honey gentleness, but wholehearted, perky gentleness with good head and shoulders. Gentleness, in this sense, comes from experiencing the absence of doubt, or doubtlessness. Being without doubt has nothing to do with accepting the validity of a philosophy or concept.
It is not that you should be converted or subjected to someone's crusade until you have no doubt about your beliefs. We are not talking about doubtless people who become evangelical crusaders, ready to sacrifice themselves for their beliefs. Absence of doubt is trusting in the heart, trusting yourself. Being without doubt means that you have connected with yourself, that you have experienced mind and body being synchronized together. When mind and body are synchronized, then you have no doubt.