Science unfolded her treasures and her secrets to the desperate demands of men, and placed in their hands agencies and apparatus almost decisive in their character. Reflecting on the outcome of World War I, and an ominous future.

Never give in, never! Be it concerning large things or small things, never, never, never!

Without execution, thinking is mere idleness.

Just to paint is great fun ... Try it if you have not done so - before you die.

Praise the humanities, my boy. That'll make them think you're broadminded!

This is no time for ease and comfort. It is time to dare and endure.

Plans are worthless. Planning is priceless.