Discusses whether it is irrational to give no weight to past desires – desires that depend on value judgements or ideals; three attitudes to time: caring more about, or being biased towards, what is near, what is in the future and what is present – whether these attitudes are rational; the direction of causation; how it would be better for us if we were temporally neutral; Time's passage; and the asymmetry in our attitudes to our own lives and the lives of others.