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Philosophy · दर्शनशास्त्र

Philosophy explained simply, with visuals

14+ free explainersVisual lessons on requestLanguage and level options

Philosophy asks the questions other subjects take for granted. Do we really choose our actions, or were they fixed by everything that came before? Is it right to sacrifice one person to save five? If every plank of a ship is replaced, is it still the same ship? These questions sound abstract, but they sit underneath law, science, religion and the everyday decisions you make. Know.it's philosophy lessons use animated thought experiments to lay out each argument clearly, so you can follow it and decide what you think.

Browse free explainers on ethics (utilitarianism and the trolley problem), the philosophy of mind (consciousness and free will), schools of thought such as stoicism, existentialism and nihilism, and the tools of good reasoning — syllogisms, paradoxes, logical fallacies and Occam's razor. Comparisons like free will vs determinism set rival views side by side.

Each lesson presents the strongest version of each position rather than telling you what to believe. Ask any philosophical question and explore it in English, Hindi, Marathi, Tamil, Telugu, Hinglish and Minglish, depending on your plan and selected lesson options.

Ask anything about philosophy

New visual lessons use your available allowance or credits. Written guides and Public Library replays are free.

What is…? Philosophy explainers

Free written definitions, key facts and FAQs

What is Stoicism?

Philosophy · Free written explainer

What is the trolley problem?

Philosophy · Free written explainer

What is free will?

Philosophy · Free written explainer

What is consciousness?

Philosophy · Free written explainer

What is existentialism?

Philosophy · Free written explainer

What is utilitarianism?

Philosophy · Free written explainer

What is Occam's razor?

Philosophy · Free written explainer

What is the Ship of Theseus?

Philosophy · Free written explainer

What is a syllogism?

Philosophy · Free written explainer

What is a paradox?

Philosophy · Free written explainer

What is determinism?

Philosophy · Free written explainer

What is nihilism?

Philosophy · Free written explainer

Philosophy comparisons

Commonly confused ideas, side by side

Free Will vs. Determinism: What's the Difference?

Free Will vs Determinism · Side by side

Existentialism vs. Nihilism: What's the Difference?

Existentialism vs Nihilism · Side by side

Key areas of philosophy

Where to start, and what each area covers.

Philosophy: frequently asked questions

Is philosophy useful in everyday life?
Yes. It trains you to spot weak arguments, think through moral choices and question assumptions — skills that apply to work, relationships and the news.
Do the lessons tell me what to believe?
No. Each lesson sets out the main positions and the best arguments for each, so you can weigh them and reach your own view.
Can I learn philosophy in Hindi?
Yes. Lessons can be narrated in Hindi, Marathi, Tamil, Telugu, English, Hinglish or Minglish.
Where should a beginner start with philosophy?
Start with the trolley problem and utilitarianism for ethics, free will vs determinism for metaphysics, and stoicism for a practical philosophy you can use straight away.
Are the philosophy lessons free?
Explainers are free to read, and Public Library lessons are free to watch. Try one new lesson without an account, then sign in for 3 free credits daily and 5 one-time starter credits. Daily credits refresh at midnight IST without rollover. Further new lessons use 1–3 credits or an active Plus or Premium pass, subject to daily limits.