We see things in perspective and not in plans and elevations. So an object at far distance might look smaller than an object of equal size which is closer to us. Different buildings are built at various scales. Traditional buildings were built at monumental scale in which man is made to feel insignificant in large volumes they enclose. These buildings are to impose an idea or myth on man.
Spaces dominate man.
In modern architecture importance of man is emphasised and buildings are designed at human scale in which man feels comfortable. Light can create moods. It makes man feel happy with its brightness and sad with its absence. Our eyes move from brighter areas to lesser bright areas. Therefore it creates a sequence to make viewing an experience.