“They say that doing ten sums a day prevents you from becoming senile. But by that argument bankers should be geniuses. That's not right. Thickest heads in the world.”
“You should never let your fears prevent you from doing what you know is right.”
“Whatever prevents you from doing your work has become your work.”
“Oh-do be careful with that! That's my Buddha hand grenade. Twist the head twice and throw it and anyone within ten yards can say their prayers.”
“When you become senile, you won't know it.”
“Never let your sense of morals prevent you from doing what is right.”