“It is not necessary to change. Survival is not mandatory.”
“you can survive only if nothing is necessary to you”
“Reciprocity is not mandatory.”
“Once it was necessary that the people should multiply and be fruitful if the race was to survive. But now to preserve the race it is necessary that people hold back the power of propagation.”
“What is necessary to change a person is to change his awareness of himself.”
“Struggling is mandatory. Suffering is optional.”