Believe nothing, O monks, just because you have been told it, or it is commonly believed, or because it is traditional or because you yourselves have imagined it. Do not believe what your teacher tells you merely out of respect for the teacher. But whatsoever, after due examination and analysis, you find to be conducive to the good, the benefit, the welfare of all beings - that doctrine believe and cling to and take as your guide.
All that we are is the result of what we have thought. If people speak or act with evil thoughts, pain follows them. If people speak or act with pure thoughts, happiness follows them, like a shadow that never leaves them.
When a man makes utensils out of a metal which has been thoroughly cleansed of dross, the utensils will be excellent. You monks, who wish to follow the Way, make your own hearts clean from the dirt of evil passion, and your conduct will be unimpeachable.
If you cannot find a good companion to walk with, walk alone, like an elephant roaming the jungle. It is better to be alone than to be with those who will hinder your progress.
When phenomena are individually analyzed as selfless, and what has been analyzed is meditated upon, that is the cause for attaining the fruit, nirvana. One does not go to peace through any other cause