Seeing the Way is like going into a dark room with a torch; the darkness instantly departs, while the light alone remains. When the Way is attained and the truth is seen, ignorance vanishes and enlightenment abides forever.
There are friendships to one who lives in society; thus our present grief arises from having friendships; observing the evils resulting from friendship, let one walk alone like a rhinoceros.
How easy it is to see your brother's faults, How hard it is to face your own. You winnow his in the wind like chaff, But yours you hide, Like a cheat covering up an unlucky throw. Dwelling on your brother's faults Multiplies your own. You are far from the end of your journey. The way is not in the sky. The way is in the heart. See how you love.
What I know is like the leaves on that tree; what I teach is only a small part. But I offer it to all with an open hand. What do I not teach? Whatever is fascinating to discuss, divides people against each other, but has no bearing on putting an end to sorrow. What do I teach? Only what is necessary to take you to the other shore.
Without approval and without scorn, but carefully studying the sentences word by word, one should trace them in the Discourses and verify them by the Discipline. If they are neither traceable in the Discourses nor verifiable by the Discipline, one must conclude thus: 'Certainly, this is not the Blessed One's utterance; this has been misunderstood by that bhikkhu - or by that community, or by those elders, or by that elder.' In that way, bhikkhus, you should reject it.
Why are you so sure parallel lines exist? Believe nothing, merely because you have been told it, or because it is traditional, or because you have imagined it.