Vyasa said No man achieves success by any other means save the acquisition of knowledge, the practice of penances, the control of the senses, and renunciation of everything.
व्यास उवाच नान्यत्र विद्यातपसोर्नान्यत्रेन्द्रियनिग्रहात्। नान्यत्र सर्वसंत्यागात् सिद्धिं विन्दति कश्चन॥