When a habit begins to cost money, it's called a hobby.
— Yiddish Proverbs

A hobby is hard work you wouldn't do for a living.
Unknown hobby quote

Beware the hobby that eats.
— Benjamin Franklin

The best way to make happy money is to make money your hobby and not your god.
— Scott Alexander

Today is life-the only life you are sure of. Make the most of today. Get interested in something. Shake yourself awake. Develop a hobby. Let the winds of enthusiasm sweep through you. Live today with gusto.
— Dale Carnegie