Quote#Science & Reason
By a clock we understand anything characterized by a phenomenon…
Quote byAlbert Einstein · 1879–1955
Commonly attributed — not confirmed in an authoritative edition. Cited on Wikiquote to: "Principe de relativité" Archives des sciences physiques et naturelles (1910) ser. 4. 29 5-28 pp. 125–244, as quoted by Julian Barbour, "The Nature of Time" (Mar 20, 2009) p. 7, arXiv:0903.3489..
English (original)
By a clock we understand anything characterized by a phenomenon passing periodically through identical phases so that we must assume, by the principle of sufficient reason, that all that happens in a given period is identical with all that happens in an arbitrary period.
— Albert Einstein
More from Albert Einstein
Es ist bequem mit dem Einstein. Jedes Jahr widerruft er, was er das vorige Jahr geschrieben hat.
One reason why mathematics enjoys special esteem, above all other sciences, is that its laws are absolutely certain and indisputable, while those of other sciences are to some extent debatable and in constant danger of being overthrown by …
The mass of a body is a measure of its energy content.
We shall, therefore, assume the complete physical equivalence of a gravitational field and a corresponding acceleration of the reference system.
Everything should be made as simple as possible, but not simpler.
How does it happen that a properly endowed natural scientist comes to concern himself with epistemology?