If a man or woman is born ten years sooner or later, their whole aspect and performance shall be different.

The connoisseur of art must be able to appreciate what is simply beautiful, but the common run of people is satisfied with ornament.

We know accurately only when we know little, with knowledge doubt increases.

To understand one thing well is better than understanding many things by halves.

Piety is not a goal but a means to attain through the purest peace of mind the highest culture.

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.

Hell begins the day that God grants you the vision to see all that you could have done, should have done, and would have done, but did not do.