Question: What makes the oak think it is better than the reed?
Disambiguated questions and answers: question: What makes the oak think it is better than the reed in early Greek versions and the 5th-century Latin version by Avianus?
What makes the oak think it is better than the reed in Le chêne et le roseau?
What makes the oak think it is better than the reed in Pierre Perret's 1990 rap version?
answer: strength to withstand the storm
roots "that touched the empire of the dead"
head that was neighbour to the sky
stacked like the Himalayas
Natural Questions answer: its strength (from the Wikipedia article "The Oak and the Reed")