Questioner: What is wrong with purposeful thinking if it is logical?
Krishnamurti: If the thinker is unaware of himself, though he may be purposeful, his logic will inevitably lead him to misery; if he is in authority, in a position of power, he brings misery and destruction upon others. That is what is happening in the world, is it not? Without self-knowledge, thought is not based on reality, it is ever in contradiction and its activities are mischievous and harmful.
Fourth Talk in The Oak Grove, 1946