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.
Knowing and feeling are two different things, and feeling is what counts.
Nobody wants to live with a person who'll never be happy.
Lesson no. 17: Happiness is caring about the happiness of those you love.
Many people see happiness only in their future.