Look at the catastrophic record Vishy Anand has against Garry Kasparov. Kasparov managed to beat him almost everywhere they played, even though Vishy Anand has belonged to the absolute top players in the world for fifteen years. This difference cannot be explained purely in chess terms, there must have been some psychology.
Love and compassion are necessities, not luxuries. Without them, humanity cannot survive. ""Laughter is good for thinking because when people laugh, it is easier for them to admit new ideas to their minds.