मृच्छकटिक - स्वभाव दोष

सस्यलंपटबलीवर्दो न शक्यो वारयितुं
    अन्यप्रसक्तकलत्रं न शक्यं वारयितुम् |
द्यूतप्रसक्तमनुष्यो न शक्यो वारयितुं
    योऽपि स्वाभाविकदोषो न शक्यो वारयितुम् ||

- मृच्छकटिक

One can not control a bull that is running towards green grass eager to eat it. One can not control a wife who is interested in some one else. One can not control a man who is addicted to gambling. One can not reform a person whose innate character is to be wicked. He is incorrigible.

- Mrucchakatika