Science is nothing but perception.

Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.

Furnished as all Europe now is with Academies of Science, with nice instruments and the spirit of experiment, the progress of human knowledge will be rapid and discoveries made of which we have at present no conception. I begin to be almost sorry I was born so soon, since I cannot have the happiness of knowing what will be known a hundred years hence.

Science has been seriously retarded by the study of what is not worth knowing and of what is not knowable.

Science can only ascertain what is, but not what should be, and outside of its domain value judgments of all kinds remain necessary.

The product of mental labor - science - always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.

For undemocratic reasons and for motives not of State, they arrive at their conclusions, largely inarticulate. Being void of self-expression they confide their views to none; but sometimes in a smoking room, one learns why things were done.

Science becomes dangerous only when it imagines that it has reached its goal.

Do you see this egg? With this you can topple every theological theory, every church or temple in the world.

We have genuflected before the god of science only to find that it has given us the atomic bomb, producing fears and anxieties that science can never mitigate.