If you can't explain it to a six year old, you don't understand it yourself. — Albert Einstein Copy Share Image
If you can't explain something to a first year student, then you haven't really understood . — Richard P. Feynman Copy Share Image
Any scientist who can't explain to an eight-year-old what he is doing is a charlatan. — Kurt Vonnegut Copy Share Image
If you can't explain it to a six year old, you don't understand it yourself. Rather than love, than money, than fame,… — Henry David Thoreau Copy Share Image