I begin my work at about nine or ten o'clock in the evening and continue until four or five in the morning. Night is a more quiet time to work. It aids thought.

Neither the Army nor the Navy is of any protection, or very little protection, against aerial raids.

Perseverance must have some practical end, or it does not avail the man possessing it. A person without a practical end in view becomes a crank or an idiot. Su…

Before anything else, preparation is the key to success.

Have you summoned your wits from wool-gathering?

Balance your thoughts with action. - If you spend too much time thinking about a thing, you'll never get it done.

Noise is the most impertinent of all forms of interruption. It is not only an interruption, but also a disruption of thought.