Biographical Background
John Locke lived from 1632 to 1704. He was a major figure in British empiricism and liberal political philosophy. Educated at Oxford, he studied medicine, natural philosophy, and politics. He was connected with Whig political circles and spent time in exile in the Netherlands. After the Glorious Revolution of 1688, his political thought became especially influential.
His major works include An Essay Concerning Human Understanding, Two Treatises of Government, A Letter Concerning Toleration, and Some Thoughts Concerning Education.
Philosophical Thought
Locke's epistemology is empiricist. He rejects innate ideas and compares the mind at birth to a blank slate. All ideas come from experience, through sensation and reflection. Sensation gives ideas of external things; reflection gives ideas of the mind's own operations.
He distinguishes primary and secondary qualities. Primary qualities such as shape, number, motion, and extension belong to bodies themselves. Secondary qualities such as color, sound, and taste are powers in objects to produce ideas in us. This distinction shaped later debates in empiricism.
Locke also emphasized the limits of knowledge. We often use names such as "gold" or "human" without knowing the real essence of the things named. Philosophy should examine the powers and limits of human understanding rather than speculate beyond them.
Politically, Locke argues that human beings in the state of nature are free and equal under natural law. They have rights to life, liberty, and property. Government is created by consent to protect these rights more securely.
His property theory holds that individuals acquire property by mixing labor with natural resources. This theory became central to liberal political thought, though it also generated later controversy.
Government is legitimate only as a trust. If it violates rights or rules arbitrarily, the people have a right of resistance. Locke also defended religious toleration, arguing that genuine belief cannot be produced by force.
Locke's importance lies in shaping modern liberalism: experience, rights, consent, property, toleration, and limited government all become central through his work.
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