Everything has its price - and if that price is not paid, not that thing but something else is obtained... it is impossible to get anything without this price.
Peace is unattained by part performance of conditions, even as a chemical combination is impossible without complete fulfillment of the conditions of attainment thereof.
If you find a saint who has no sense of humour, then he is not a saint at all. Impossible. His very seriousness says that he has not achieved. Once you have some inner experiences of your own you become very playful, you become very innocent, childlike.