Become happy (CC and Other Books)
Sri Caitanya-caritamrta
CC Adi-lila
CC Adi 7.119, Purport:
From the Bhagavad-gītā it is understood that one does not die with the annihilation of his body (na hanyate hanyamāne śarīre (BG 2.20)). The annihilation of one body involves changing to another (tathā dehāntara-prāptiḥ (BG 2.13)). Therefore, to perform irresponsible activities in the material world is very dangerous. Without knowledge of the spirit soul and its transmigration, people are allured by the material energy to engage in many such activities, as if one could become happy simply by dint of material knowledge, without reference to spiritual existence. Therefore the entire material world and its activities are referred to as avidyā-karma-saṁjñānyā.