For ease and speed in doing a thing do not give the work lasting solidity or exactness of beauty.

Work done quickly and easily tends to lack the qualities that make work last. Solidity comes from attention paid to parts nobody will inspect, and beauty from decisions revisited more times than seemed necessary. Neither survives being rushed, however capable you are.

Choose the one thing this week that ought to outlast the week and give it more time than efficiency would allow. Let the rest be quick, since not everything needs to endure. Knowing which is which is most of the skill.