Do you have doubts about life? Are you unsure if it is really worth the trouble? Look at the sky: that is for you. Look at each person’s face as you pass them on the street: those faces are for you. And the street itself, and the ground under the street, and the ball of fire underneath the ground: all these things are for you. They are as much for you as they are for other people. Remember this when you wake up in the morning and think you have nothing. Stand up and face the east. Now praise the sky and praise the light within each person under the sky. It’s okay to be unsure. But praise, praise, praise.
I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do.
— Robert A. Heinlein, The Moon is a Harsh Mistress