It is not given to us to know which acts or by whom, will...

It is not given to us to know which acts or by whom, will cause the critical mass to tip toward an enduring good. What's needed for dramatic change is an accumulation of acts, adding, adding to, adding more, continuing. We know that it does not take 'everyone on Earth' to bring justice and peace, but only a small, determined group who will not give up during the first, second, or hundredth gale.