If God is intelligence and understanding, then scientific truth is the word of God. The development of science in the last hundred years has been the salvation of man. Thou shouldst do unto thy neighbor as thou wouldst have thy neighbor do unto thee. The Golden Rule of Jesus is the real philosophy of life. Life consists of our conduct in our relation to our fellow man.
Conduct is the result of environment and temperament.
Happiness is peace of mind. Riches do not necessarily bring happiness. Pursue such a course in life as will bring pleasant memories, for upon that depends a successful life, both spiritual and mental. You will see quite a bit of the tragedies of life. Smile and laugh all you can.