The business of education is not to make the young perfect in any one of the sciences, but so to open and dispose their minds as may make them capable of any, when they shall apply themselves to it.

The duty of man is the same in respect to his own nature as in respect to the nature of all other things.

Take a simple idea, and take it seriously.

The beauty of physics lies in its ability to reveal the profound simplicity underlying the apparent complexity of the universe.

人生苦短，不能不冒险。