George Wald Quote

Never try to teach what you do not yourself know and know well.


Quoted in David Starr Jordan, Science Sketches, Quoted in David Starr Jordan (p. 145)


Never try to teach what you do not yourself know and know well.

Never try to teach what you do not yourself know and know well.

Never try to teach what you do not yourself know and know well.

Never try to teach what you do not yourself know and know well.