Pygame - Instructions - without animation

def Instructions():

    # declare only once
    paragraph = """Your are the last surviving rhino. Your horn
        is worth millions! Right now you are trapped in a zoo and
        waiting to be slaughtered for your horn. But you can't give
        up! Escape from the tribesmen and zoo security so you can
        enjoy your life as a free being once again"""

    # load only once
    image = pygame.image.load("background0.jpg").convert()

    # create only once
    InstructionFont = pygame.font.SysFont("elephant",15)

    # get only once
    TextSurf, TextRect = text_objects(paragraph, InstructionFont)

    # set only once
    #TextRect.center = ((screen_width/2),(screen_height/2))
    TextRect.center = screen.center

    # create button only once
    button = Buttons("BACK",100,500,120,50,TURQUOISE,DARK_TURQUOISE,"back")



    # blit only once
    screen.blit(image, (0,0))

    # blit only once
    screen.blit(TextSurf, TextRect)

    # draw only once
    button.draw()

    # update only once
    pygame.display.update()

    intro = True

    # repeat thousands times in one second.
    while intro:

        # check events 15 times per second (15 FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        clock.tick(15) # <- slow down to 15 FPS