Inspirational Quotes

Words to motivate, inspire, and guide you.

Theory Quotes

Biography Experience Knowledge Learning Theory Read no history: nothing but biography, for that is life without theory.

Benjamin Disraeli

Former Prime Minister of the United Kingdom

Physics Space Travel Spacetime Theory It is theoretically possible to warp spacetime itself, so you're not actually moving faster than the speed of light, but it's actually space that's moving.

Elon Musk

Technology Entrepreneur and Investor

Limitation Progress Quantum Mechanics Theory Understanding Because the theory of quantum mechanics could explain all of chemistry and the various properties of substances, it was a tremendous success. But still there was the problem of the interaction of light and matter.

Richard P. Feynman

American theoretical physicist

Art Authenticity Theory Value A work of art that contains theories is like an object on which the price tag has been left.

Alexander Pope

English Poet and Translator

Guidance Practice Purpose Theory He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

Leonardo da Vinci

Philosophy Practicality Relevance Theory The theoretical understanding of the world, which is the aim of philosophy, is not a matter of great practical importance to animals, or to savages, or even to most civilised men.

Bertrand Russell

Former Member of the House of Lords of the United Kingdom