Let no man who is not a Mathematician read the elements of my work.

Knowledge is a tangible asset, quite often the most important tool in your work.

Work is external to the worker. . . . It is not part of his nature; consequently he does not fulfill himself in his work but denies himself. . . . The worker therefore feels himself at home only during his leisure time, whereas at work he feels homeless.

Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer. Go some distance away because then the work appears smaller and more of it can be taken in at a glance and a lack of harmony and proportion is more readily seen.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

Make your work to be in keeping with your purpose.