back to basics
Definition from Wiktionary, the free dictionary
Alternative forms 
back to basics (not comparable)
- back to fundamental principles
- You can't teach them calculus when they can't add up; let's get back to basics.
back to basics (uncountable)
- (politics, chiefly UK) A conscious return to principles such as self-respect, decency and honesty; especially the discredited policy of the Conservative government in the 1990s.