Tattwa (Element), Indriya (Sense) and Saankhya (Numeric) Darshan

The eight categories of nature.

भूमिरापोऽनलो वायुः खं मनो बुद्धिरेव च ।
अहङ्कार इतीयं मे भिन्ना प्रकृतिरष्टधा ॥७:४॥

Lord Krishna says to Arjun:
I have separated this existence into eight parts: land, water, fire, air, space, mind, intelligence and individuality.

Twenty four Tattwas (elements).

महाभूतान्यहङ्कारो बुद्धिरव्यक्तमेव च ।
इन्द्रियाणि दशैकं च पञ्च चेन्द्रियगोचराः ॥१३:६॥

Lord Krishna says to Arjun:
The five fundamental elements, egotism, wisdom, unmanifested, eleven senses and the senses of perceptions.

The true knower knows that the senses do their job, you don't do them.

नैव किञ्चित्करोमीति युक्तो मन्येत तत्त्ववित् ।
पश्यञ्शृण्वन्स्पृशञ्जिघ्रन्नश्नन्गच्छन्स्वपञ्श्वसन् ॥५:८॥

Lord Krishna says to Arjun:
One who knows the truth thinks "I do not do anything" though engaged in seeing, hearing, touching, smelling, eating, moving, dreaming and breathing.

Even the actions like opening and closing of eyelids are done by sense or their stimulants.

प्रलपन्विसृजन्गृह्णन्नुन्मिषन्निमिषन्नपि ।
इन्द्रियाणीन्द्रियार्थेषु वर्तन्त इति धारयन् ॥५:९॥

Lord Krishna says to Arjun:
Even the talking, excreting, grasping, opening and closing of the eyelids are maintained by the senses and their stimulants.

Just like the turtle withdraws its limbs, one should control their senses.

यदा संहरते चायं कूर्मोऽङ्गानीव सर्वशः ।
इन्द्रियाणीन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता ॥२:५८॥

Lord Krishna says to Arjun:
Just like when the turtle withdraws its limbs wholly, he who withdraws senses from desired objects, he has a valued wisdom.

From sense objects to senses to mind to intelligence, superiority goes up all the way to the soul.

इन्द्रियाणि पराण्याहुरिन्द्रियेभ्यः परं मनः ।
मनसस्तु परा बुद्धिर्यो बुद्धेः परतस्तु सः ॥३:४२॥

Lord Krishna says to Arjun:
The minds are said to be superior to the senses; the intelligence is but superior to the conscience; and the soul is above the intelligence.