Patience and tenacity are worth more than twice their weight of cleverness. patience
Ecclesiasticism in science is only unfaithfulness to truth. science & truth
All truth, in the long run, is only common sense clarified. truth
Science and literature are not two things, but two sides of one thing. science
Science is nothing, but trained and organized common sense. science
Every great advance in natural knowledge has involved the absolute rejection of authority. greatness & knowledge
The scientific imagination always restrains itself within the limits of probability. imagination
Time, whose tooth gnaws away everything else, is powerless against truth. time & truth
The results of political changes are hardly ever those which their friends hope or their foes fear. fear & hope
The man of science has learned to believe in justification, not by faith, but by verification. faith & science
Science is organized common sense where many a beautiful theory was killed by an ugly fact. science
Economy does not lie in sparing money, but in spending it wisely. money
Of moral purpose I see no trace in Nature. That is an article of exclusively human manufacture and very much to our credit. nature
No delusion is greater than the notion that method and industry can make up for lack of mother-wit, either in science or in practical life. science
The more rapidly truth is spread among mankind the better it will be for them. Only let us be sure that it is the truth. truth
The best men of the best epochs are simply those who make the fewest blunders and commit the fewest sins. best
Science has fulfilled her function when she has ascertained and enunciated truth. science & truth
Try to learn something about everything and everything about something. learning
If a little knowledge is dangerous, where is the man who has so much as to be out of danger? knowledge
Proclaim human equality as loudly as you like, Witless will serve his brother. equality
Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic. best & science
History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions. history
No slavery can be abolished without a double emancipation, and the master will benefit by freedom more than the freed-man. freedom
Science commits suicide when it adopts a creed. science
The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact. greatness & science
The great thing in the world is not so much to seek happiness as to earn peace and self-respect. greatness, happiness & peace
My experience of the world is that things left to themselves don't get right. experience
Books are the money of Literature, but only the counters of Science. money & science
Teach a child what is wise, that is morality. Teach him what is wise and beautiful, that is religion! religion
My business is to teach my aspirations to confirm themselves to fact, not to try and make facts harmonize with my aspirations. business
In scientific work, those who refuse to go beyond fact rarely get as far as fact. work
Freedom and order are not incompatible... truth is strength... free discussion is the very life of truth. freedom, strength & truth
Science reckons many prophets, but there is not even a promise of a Messiah. science