Principles are conventions and definitions in disguise.

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Principles are conventions and definitions in disguise.

Henri Poincaré

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Principles are conventions and definitions in disguise.

Principles are conventions and definitions in disguise.

Principles are conventions and definitions in disguise.

Principles are conventions and definitions in disguise.

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How full of trifles everything is! It is only one's thoughts that fill a room with something more than furniture.

Wallace Stevens

Henri Poincaré

Henri Poincaré

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Born: April 29, 1854

Died: July 17, 1912 (aged 58)

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