“Everyone chases after happiness, not noticing that happiness is at their heels.”

“The human race tends to remember the abuses to which it has been subjected rather than the endearments. What's left of kisses? Wounds, however, leave scars.”

“The compassion of the oppressed for the oppressed is indispensable. It is the world's one hope.”

“Those who are weak don't fight.Those who are stronger might fightfor an hour.Those who are stronger still might fightfor many years.The strongest fighttheir whole life.They are the indispensable ones.”

“Natrlich muss die Wahrheit im Kampf mit der Unwahrheit geschrieben werden und sie darf nicht etwas Allgemeines, Hohes, Vieldeutiges sein. Von dieser allgemeinen, hohen, vieldeutigen Art ist ja gera...”

“We attacked a foreign people and treated them like rebels. As you know, it's all right to treat barbarians barbarically. It's the desire to be barbaric that makes governments call their enemies bar...”

“Should we not be concerned as to whether this fear of error is not just the error itself?”

“An error does not become truth by reason of multiplied propagation, nor does the truth become error because nobody will see it. 1924-1926)”

“The scientific spirit is of more value than its products, and irrationally held truths may be more harmful than reasoned errors.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”