Quotes from Bhagavad Gita, Chapter 2

Even the mind of the wise man who labours for perfection is carried away by the vehement insistence of the senses, O son of Kunti. (2:60)

Only the interactions of the senses and sense objects give cold,heat,pleasure and pain. These are temporary, appearing and disappearing; therefore learn to tolerate without being disturbed (2.14)