If you let go a little you will have a little happiness. If you let go a lot you will have a lot of happiness. If you let go completely you will be free.
Different men seek after happiness in different ways and by different means, and so make for themselves different modes of life and forms of government.
What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.
Say thank you! I want to hear you say it now. Out loud. 'Thank you.' You're saying thank you because your faith is so strong that you don't doubt that whatever the problem, you'll get through it. You're saying thank you because you know that even in the eye of the storm, God has put a rainbow in the clouds. You're saying thank you because you know there's no problem created that can compare to the Creator of all things. Say thank you!
If happiness always depends on something expected in the future, we are chasing a will-o'-the-wisp that ever eludes our grasp, until the future, and ourselves, vanish into the abyss of death.
Material objects give rise to physical happiness, while spiritual development gives rise to mental happiness. Since we experience both physical and mental happiness, we need both material and spiritual development. This is why, for our own good and that of society we need to balance material progress with inner development.