Variation must be taken as random until there is positive evidence to the contrary. — Harold Jeffreys Copy Share Image
A formal and consistent theory of inductive processes cannot represent the operation of every human mind in detail; it will represent an ideal mind,… — Harold Jeffreys Copy Share
We have to come back to something like ordinary language after all when we want to talk "about" mathematics! — Harold Jeffreys Copy Share
What the use of P [the significance level] implies, therefore, is that a hypothesis that may be true may be rejected because it has… — Harold Jeffreys Copy Share
There are some current 'theories' that, when divested of begged questions, reduce to the non-controversial statement, 'Here are some facts and there may be… — Harold Jeffreys Copy Share
The real difficulty about volcanism is not to see how it can start, but how it can stop. — Harold Jeffreys Copy Share
All suggested accounts of the origin of the solar system are subject to serious objections. The conclusion in the present state of the subject… — Harold Jeffreys Copy Share
Variation must be taken as random until there is positive evidence to the contrary. — Harold Jeffreys Copy Share
An observation, strictly, is only a sensation. Nobody means that we should reject everything but sensations. But as soon as we go beyond sensations… — Harold Jeffreys Copy Share
