Criticism may not be agreeable, but it is necessary. It fulfils the same function as pain in the human body. It calls attention to an unhealthy state of things.

Never give in except to convictions of honor and good sense.

Never yield to the apparently overwhelming might of the enemy.

I must place on record my regret that the human race ever learned to fly.

I no longer listen to what people say, I just watch what they do. Behavior never lies.

I do not understand the squeamishness about the use of gas. I am strongly in favour of using poisonous gas against uncivilized tribes.

Have not Manet and Monet, Cézanne and Matisse, rendered to painting something of the same service which Keats and Shelley gave to poetry after the solemn and ceremonious literary perfections of the eighteenth century? They have brought back to the pictorial art a new draught of joie de vivre; and the beauty of their work is instinct with gaiety, and floats in sparkling air. I do not expect these masters would particularly appreciate my defence, but I must avow an increasing attraction to their work.