Lord Chesterfield said this quote

Firmness of purpose is one of the most necessary sinews of character and one of the best instruments of success. Without it genius wastes its efforts in a maze of inconsistencies.

~ Lord Chesterfield

Pleasure is a reciprocal no one feels it who does not at the same time give it. To be pleased one must please.

~ Lord Chesterfield

Few men are of one plain decided colour most are mixed shaded and blended and vary as much from different situations as changeable silks do from different lights.

~ Lord Chesterfield

Know the true value of time snatch seize and enjoy every moment of it. No idleness no laziness no procrastination: never put off till tomorrow what you can do today.

~ Lord Chesterfield