Sri Vaishnavism is a form of Hinduism that centers around devotion to the deity Vishnu, specifically through the teachings of the 12th century philosopher Ramanuja. The main belief of Sri Vaishnavism is that the ultimate goal of human life is to attain moksha, or liberation from the cycle of birth and death, by surrendering to Vishnu and developing a loving relationship with him.

According to Sri Vaishnavism, Vishnu is the supreme being and the creator, sustainer, and destroyer of the universe. He is seen as the loving and compassionate protector of all beings, and devotees believe that by surrendering to him, they can achieve spiritual enlightenment and eternal bliss.

One of the key principles of Sri Vaishnavism is the concept of bhakti, or devotion, which is seen as the most effective path to attaining moksha. Devotees are encouraged to cultivate a deep love and devotion for Vishnu, and to engage in various forms of worship and service to him. This can include chanting his names, singing his praises, and performing rituals and ceremonies in his honor.

Another important belief in Sri Vaishnavism is the concept of prapatti, or surrender. This involves completely surrendering one's ego and will to Vishnu, and relying on his grace and mercy for salvation. Devotees believe that through this surrender, they can overcome their own limitations and attain a state of pure love and devotion for Vishnu.

In addition to bhakti and prapatti, Sri Vaishnavism also emphasizes the importance of knowledge and understanding. It is believed that by studying the scriptures and the teachings of Ramanuja, devotees can gain a deeper understanding of Vishnu and his divine nature, which will ultimately lead to a stronger connection with him.

Overall, the main belief of Sri Vaishnavism is that through devotion, surrender, and knowledge, one can attain moksha and achieve a state of eternal bliss with Vishnu. This philosophy emphasizes the power of love and devotion in spiritual growth, and the importance of a personal relationship with the divine.