I believe that history might be, and ought to be, taught in a new fashion so as to make the meaning of it as a process of evolution intelligible to the young.
The man of science has learned to believe in justification, not by faith, but by verification.
Proclaim human equality as loudly as you like, Witless will serve his brother.
The Bible has been the Magna Carta of the poor and of the oppressed.
Of moral purpose I see no trace in Nature. That is an article of exclusively human manufacture and very much to our credit.
The medieval university looked backwards; it professed to be a storehouse of old knowledge. The modern university looks forward, and is a factory of new knowledge.
Science reckons many prophets, but there is not even a promise of a Messiah.
The scientific imagination always restrains itself within the limits of probability.
The most considerable difference I note among men is not in their readiness to fall into error, but in their readiness to acknowledge these inevitable lapses.
The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher.
The great thing in the world is not so much to seek happiness as to earn peace and self-respect.
The world is neither wise nor just, but it makes up for all its folly and injustice by being damnably sentimental.
Economy does not lie in sparing money, but in spending it wisely.
It is the customary fate of new truths, to begin as heresies, and to end as superstitions.
History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions.
Time, whose tooth gnaws away everything else, is powerless against truth.
Logical consequences are the scarecrows of fools and the beacons of wise men.
The only medicine for suffering, crime, and all other woes of mankind, is wisdom. Teach a man to read and write, and you have put into his hands the great keys of the wisdom box. But it is quite another thing to open the box.