Thought is time. Thought is born of experience and knowledge, which are inseparable from time and the past. Time is the psychological enemy of man. Our action is based on knowledge and therefore time, so man is always a slave to the past. Thought is ever-limited and so we live in constant conflict and struggle. There is no psychological evolution.
When man becomes aware of the movement of his own thoughts, he will see the division between the thinker and thought, the observer and the observed, the experiencer and the experience. He will discover that this division is an illusion. Then only is there pure observation which is insight without any shadow of the past or of time. This timeless insight brings about a deep, radical mutation in the mind.
Total negation is the essence of the positive. When there is negation of all those things that thought has brought about psychologically, only then is there love, which is compassion and intelligence.