We observe shapes all the time yet did we fail to realize that there is a psychology behind shapes? Particular shapes make us feel a certain way. For example Shapes with rounded edges are softer and more approachable.
The round shape tends to send positive emotional energy of harmony and protection.
Ovals have no beginning or end, they represent life and the life-cycle. Due to their curved lines, ovals and circle are graceful and complete. They give a sense of integrity and perfection.