“If the experimental physicist has already done a great deal of work in this field, nevertheless the theoretical physicist has still hardly begun to evaluate the experimental material which may lead him to conclusions about the structure of the atom.” IfsMayStillsDoneDealsFieldsMaterialsStructureConclusionAtomsNeverthelessPhysicistTheoreticalEvaluate Author:Johannes Stark
“As a constellation, theoretical thought circles the concept it would like to unseal, hoping that it may fly open like the lock of a well-guarded safe-deposit box: in response, not to a single key or a single number, but to a combination of numbers” WellsMayNumbersKeysSafeConceptsResponseBoxesCirclesCombinationLocksTheoreticalConstellationsGuardedDeposits Book:Negative Dialectics Source: Negative Dialectics
“For even the best of peace training is more theoretical than practical experience ... indirect practical experience may be the more valuable because infinitely wider.” MayMilitaryTrainingValuablePracticalsTheoreticalIndirectPractical Experience Author:B. H. Liddell Hart
“No matter how we may single out a complex from nature...its theoretical treatment will never prove to be ultimately conclusive... I believe that this process of deepening of theory has no limits.” BelieveMayMatterI BelieveProcessTheoryProveLimitsComplexesTreatmentSkepticismTheoretical Author:Albert Einstein
“...the physicist cannot simply surrender to the philosopher the critical contemplation of the theoretical foundations; for, he himself knows best, and feels more surely where the shoe pinches...Physical conceptions are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.” KnowsWorldFeelsMindHumansMaySeemsScienceCreationFoundationShoesPhilosopherCriticalDeterminedSurrenderContemplationHuman MindConceptionMechanicPhysicistTheoreticalQuantum Mechanics Author:Albert Einstein