" Examine the lives of the best and most fruitful people and peoples and ask yourselves whether a tree which is supposed to grow to a proud height could do without bad weather and storms; whether misfortune and external resistance, whether any kinds of hatred, jealousy, stubbornness, mistrust, hardness, greed, and violence do not belong to the favourable conditions without which any great growth even of virtue is scarcely possible? "

― Iain McGilchrist , The Matter With Things: Our Brains, Our Delusions, and the Unmaking of the World