Misc: who were the enemies of the federation?

Questions

"You get the best out of others when you give the best of -----------."- Harry Firestone?

"------------- is a relentless master. It has no present, only the past rushing into the future. To try to hold fast is to be swept aside."- John fitzgerald Kennedy?

"---------- is a vast early warning system."- Norman Cousins?

"--------------- is the version of past events that people have decided to agree upon."- Napoleon?

"Hold fast to -----------, for if dreams die, life is a broken bird that cannot fly."- Langston Hughes?