The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.
What progress we are making. In the Middle Ages they would have burned me. Now they are content with burning my books.
We should not allow it to be believed that all scientific progress can be reduced to mechanisms, machines, gearings, even though such machinery also has its beauty. Neither do I believe that the spirit of adventure runs any risk of disappearing in our world.
We live in this world in order always to learn industriously, and to enlighten each other by means of discussion, and to strive vigorously to promote the progress of science and the fine arts.
There is hardly such a thing as a war in which it makes no difference who wins. Nearly always one stands more or less for progress, the other side more or less for reaction.
The ancient commission of the writer has not changed. He is charged with exposing our many grievous faults and failures, with dredging up to the light our dark and dangerous dreams for the purpose of improvement.
Restlessness is discontent — and discontent is the first necessity of progress. Show me a thoroughly satisfied man — and I will show you a failure.