Have full faith in God and in yourselves, engage always in good deeds, beneficial activities; speak the truth, do not inflict pain by word or deed or even thought. That is the way to gain shanti; that is the highest gain which you can earn in this life. (SSS Vol.1, p. 69)
Examine every day what you do and with what motive; then you can yourself pronounce judgement on your progress. Select only pure motives, pure deeds. (SSS Vol.1, p. 149)