It is impossible for you to be angry and laugh at the same time. Anger and laughter are mutually exclusive and you have the power to choose either.
People will ask me: Don’t you believe in God? No, I don’t. I believe in two things above all: Nature and Love. Nature is all-powerful. Love is how I understand the good. It might have been nice to believe in God, often defined as all-powerful and good, but combining the two like that has always posed too much of a contradiction for my poor mind to believe in.
Since, O Mazda, from the beginning, Thou didst create soul and body; mental power and knowledge and since Thou didst place life within the corporeal body and didst bestow to mankind the power to act, speak and guide, you wished that everyone should choose his or her own faith and path freely.

