Mankind's survival is ...

Mankind\'s survival is dependent on man\'s ability to solve the problems of racial injustice, poverty, and war; the solution of these problems is in turn dependent upon man\'s squaring his moral progress with his scientific progress, and learning the practical art of living in harmony.
Mankind's survival is dependent on man's ability to solve the problems of racial injustice, poverty, and war; the solution of these problems is in turn dependent upon man's squaring his moral progress with his scientific progress, and learning the practical art of living in harmony.

Quotes from the same author

A man can't ride your back unless it's bent.
the universe is under the control of a loving purpose, and that in the struggle for righteousness man has cosmic companionship (angels). Behind the harsh appearance of the world there is a benign power.
You don't have to see the whole staircase, just take the first step.
In the process of gaining our rightful place, we must not be guilty of wrongful deeds. Let us not seek to satisfy our thirst for freedom by drinking from the cup of bitterness and hatred. We must forever conduct our struggle on the high plane of dignity and discipline.
A man who won't die for something is not fit to live.