The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as poetry. – Bertrand Russell
Freedom in general may be defined as the absence of obstacles to the realization of desires. – Bertrand Russell
The most savage controversies are those about matters as to which there is no good evidence either way. Persecution is used in theology, not in arithmetic. – Bertrand Russell
The observer, when he seems to himself to be observing a stone, is really, if physics is to be believed, observing the effects of the stone upon himself. – Bertrand Russell