Indian philosophy is centered around Vedas, the ancient scriptures revealed through the minds of ancient sages. So, we have Vedic philosophy which accepts the authority of the Vedas and is rooted in six branches, namely, Sānkhya, Nyāya, Yoga, Vaiśeṣika, Mimānsa and Vedānta. Then there are philosophies which do not accept the authority of the Vedas, namely, Buddhist and Jain philosophies and some viewpoints which are not in the mainstream, e.g., Traita and Chārvāk philoso...
तसै तपो दमः कर्मेति प्रतिष्ठा वेदाः सर्वाङ्गानि सत्यमायतनम् ॥Kena ४.८॥ (or, तस्यै)
tasai tapo damaḥ karmeti pratiṣṭhā vedāḥ sarvāṅgāni satyamāyatanam II4.8II
Of that (Brahman-Vidya), austerity, self-conquest and works (or, rituals) are the foundation; Vedas are all the parts (and) Truth is the abode.