“All for all” and “each for all” is the motto of whom?

Qeq4I2QneiuCSglcilYMUY
E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) p. 208-210
Practise the full UPPSC 2022
Attempt every question from this paper in a timed mock, then review the full solution for each one.