To be happy, one must rid oneself of prejudice, be virtuous, healthy, and have a capacity for enjoyment and for passion.
Emilie du ChateletSelf-love is always the mainspring, more or less concealed, of our actions; it is the wind which swells the sails, without which the ship could not go.
Emilie du Chateletlove of learning is the most necessary passion ... in it lies our happiness. It's a sure remedy for what ails us, an unending source of pleasure.
Emilie du Chatelet