Daniel Kahneman

People are very complex. And for a psychologist, you get fascinated by the complexity of human beings, and that is what I have lived with, you know, in my career all of my life, is the complexity of human beings.

You know, the standard state for people is 'mildly pleasant.' Negative emotions are quite rare, and extremely positive emotions are rare. But people are mildly pleased most of the time, they're mildly tired a lot of the time, and they wish they were somewhere else a substantial part of the time - but mostly they're mildly pleased.

Cynicism masquerades as wisdom, but it is the furthest thing from it. Because cynics don't learn anything. Because cynicism is a self-imposed blindness: a rejection of the world because we are afraid it will hurt us or disappoint us. Cynics always say 'no.' But saying 'yes' begins things. Saying 'yes' is how things grow.