Small is the number of them that see with their own eyes and feel with their own hearts.

A great thought begins by seeing something differently, with a shift of the mind's eye.

A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.

I myself should also be dead already, but I am still here.

I can understand your aversion to the use of the term 'religion' to describe an emotional and psychological attitude which shows itself most clearly in Spinoza... I have not found a better expression than 'religious' for the trust in the rational nature of reality that is, at least to a certain extent, accessible to human reason.

Even if only 2 percent of those assigned to perform military service should announce their refusal to fight, governments would be powerless, they would not dare send such a large number of people to jail.

Politics is for the present, but an equation is for eternity.