Simplify the following text for a Grade 9 native English-speaking person.
Original: In response to Goodall 's revolutionary findings , Louis Leakey wrote , `` We must now redefine man , redefine tool , or accept chimpanzees as human ! ''
Simplified: In response to Jane 's research , Louis Leakey wrote , `` We must now redefine man , redefine tool , or accept chimpanzees as human ! ''