Vigorous societies harbour a certain extravagance of objectives.

War can protect; it cannot create.

Science repudiates philosophy. In other words, it has never cared to justify its truth or explain its meaning.

The aim of science is to seek the simplest explanation of complex facts... Seek simplicity and distrust it.

Every organism requires an environment of friends, partly to shield it from violent changes, and partly to supply it with its wants.

From the very beginning of his education, the child should experience the joy of discovery.

Algebra is the intellectual instrument which has been created for rendering clear the quantitative aspects of the world.