Keep your thoughts pure.

Keep your thoughts pure that you may not be the means of doing injury to others. 

It is equally true that you may unconsciously do considerable good in the world by simply living a good life, and thus influencing others, not so much by your example, as by your personal magnetic sphere, which is beneficial to the morally diseased with whom you come into contact. 

An unequal amount of good may be done by one who leads a pure life in the midst of the impure, as by one who gives thousands away in charity. 

The one gives spiritual benefits and the other bestows temporal advantages. 

You confer benefits by your example but also by your personal magnetic sphere; the good is not only confined to the healthy influence of your own presence but is likewise enhanced by the healthy influence of the spirit friends you bring with you.