Surely only correct understanding could lead to correct action. Lois McMaster Bujold
Anger and intolerance are the enemies of correct understanding. Mahatma Gandhi
The correct understanding of life, let me tell you, is love despite everything. Love despite everything, that is the aim and object of life. Love, you see, is the only thing that pays in the long run, even though it might seem a dead loss in the short run. Halldór Laxness
Whether man is disposed to yield to nature or to oppose her, he cannot do without a correct understanding of her language. Jean Rostand