Even scientific knowledge, if there is anything to it, is not a random observation of random objects; for the critical objectivity of significant knowledge is attained as a practice only philosophically in inner action. Karl Jaspers
If a man fights his way through his doubts to the conviction that Jesus Christ is Lord, he has attained to a certainty that the man who unthinkingly accepts things can never reach. William Barclay
If liberty and equality, as is thought by some, are chiefly to be found in democracy, they will be best attained when all persons alike share in government to the utmost.
Aristotle
Perfection is finally attained not when there is no longer anything to add but when there is no longer anything to take away, when a body has been stripped down to its nakedness. Antoine de Saint-Exupery
So long as peace is not attained by law (so argue the advocates of armaments) the military protection of a country must not be undermined, and until such is the case disarmament is impossible. Ludwig Quidde