Nature is the realm of Law. Whatever you do will be followed by its necessary consequences sparkled with some randomness. The processes, your actions trigger, have a total indifference for you wellbeing, your life, your opinion.

Knowledge doesn't bring happiness necessarily. Ignorance neither. If truth is what you care for, happiness is not the reward. The happiness of a person is not a sign of her knowledge, or insight of truth. Happiness doesn't reveal anything beyond itself.

Frankly, I'm not sure it's true, but it sounds good and profound.