One acquires perception of touch by the skin that covers the body. That which is called the Intelligence undergoes changes. When the Intelligence desires anything it is called Mind.
त्वचा स्पर्शयते स्पर्श बुद्धिर्विक्रियतेऽसकृत्। येन प्रार्थयते किञ्चित् तदा भवति तन्मनः॥