When the boy begins to understand that the visible point is preceded by an invisible point, that the shortest distance between two points is conceived as a straight line before it is ever drawn with pencil and paper...the fountain of all thought has been opened to him...the philosopher can reveal him nothing new, as a geometrician he has discovered the basis of all thought.

Flowers are the beautiful hieroglyphics of nature with which she indicates how much she loves us.

There is not a single outward mark of courtesy that does not have a deep moral basis.

War is in truth a disease in which the juices that serve health and maintenance are used for the sole purpose of nourishing something foreign, something at odds with nature.

The effects of good music are not just because it's new; on the contrary music strikes us more the more familiar we are with it.

For what one has in black and white, One can carry home in comfort.

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