An ignorant person is, by the very fact of his or her ignorance, a very dangerous person.

....This world needs Utopias as it needs fairy stories. It does not matter so much where we are going, as long as we are making consciously for some definite goal. And a Utopia, however strange or fanciful, is the only possible beacon upon the uncharted seas of the distant future.

Life means progress, and progress means suffering.

A few drops of science will often disinfect an entire barrel full of ignorance and prejudice.

Nature is rarely allowed to enter the sacred portals of civilized society.

An ignorant person is, by the very fact of his or her ignorance, a very dangerous person.

The arts are an even better barometer of what is happening in our world than the stock market or the debates in congress.