You must be careful when you ask people whether they’re happy; it’s a question that can upset them a great deal.

Knowing and feeling are two different things, and feeling is what counts.

Many people think that happiness comes from having more power or more money.

People fall in love more easily when they are already troubled by another emotion because we know that any intense emotional state greatly increases the risk of falling in love.

Making comparisons can spoil your happiness.

It is love that transports us, that fills us with joy! Love turns life into one long adventure, every encounter is a dazzling experience - well, not always, of course, but in actual fact, it is our less successful love affairs that enable us to appreciate the others. I think love protects us from one of the biggest problems facing the modern world: boredom.

Lesson no. 17: Happiness is caring about the happiness of those you love.