Translate the following English sentence to French:
"Secondly, a sound knowledge base, which imparts important material and leaves out what is unimportant, still forms the basis for education in the twenty-first century."
Deuxièmement, une bonne base de connaissances, qui apporte ce qui est important et délaisse ce qui est futile, reste le fondement de l'éducation au XXIe siècle.