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.[Was wir für Fortschritte machen! Im Mittelalter hätten sie mich verbrannt, heutzutage begnügen sie sich damit, meine Bücher zu verbrennen, bemerkt Freud dazu.]
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.
We can produce in abundance food and materials, and manufacture in mass production all the essentials and luxuries of life. Machinery should be a blessing to mankind and not a curse. Therefore, let us have shorter hours of labor and cheaper money. The purchasing power comes through wages. Then let us raise them to where each man can enjoy the blessings and the glory of science, which were not created for profit alone, but to serve humanity also.
There is hardly such a thing as a war in which it makes no difference who wins. Nearly always one side stands more or less for progress, the other side more or less for reaction.
The only real progress lies in learning to be wrong all alone.[Le seul vrai progrès est au contraire d’apprendre à avoir tort tout seul.]
The advance of genetic engineering makes it quite conceivable that we will begin to design our own evolutionary progress.
Restlessness is discontent – and discontent is the first necessity of progress. Show me a thoroughly satisfied man – and I will show you a failure.