« I have noticed that what cats most appreciate in a human being is not the ability to produce food, which they take for granted – but his or her entertainment value » – Geoffrey Household
« Happiness can be defined, in part at least, as the fruit of the desire and ability to sacrifice what we want now for what we want eventually » – Stephen R. Covey
« Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. » – Douglas Adams