Believe not because some old manuscripts are produced, believe not because it is your national belief, believe not because you have been made to believe from you childhood, but reason truth out, and after you have analyzed it, then if you find it will do good to one and all, believe it, live up to it and help others live up to it.
Just as a tree, though cut down, sprouts up again if its roots remain uncut and firm, even so, until the craving that lies dormant is rooted out, suffering springs up again and again.
Sometime, somewhere you take something to be the truth. But if you cling to it too strongly, then even when the truth comes in person and knocks on your door, you will not open it.
Live contemplating the body. Contemplate internally and externally. Contemplate the origination of things in the body. Contemplate the dissolution of things in the body.
Even if a fool lived with a wise man all his life, he would still not recognise the truth, like a wooden spoon cannot recognise the flavour of the soup.