Effizient. Latin efficiens, efficient; a large effect based on little effort; to achieve much with less; economic, economical.
Wirkung. Effect, output, results; a change realized by energy, effort, input; infuence; a sustained, positive effect.
Wirtschaftlich. Economical; concerning the economy; monetary, financial; to work intelligently; to be frugal, to save money; to achieve the maximum based on available resources.
Weniger ist mehr. Less is more. To focus on the essence, on the core. Functionality trumps design, thus saving time, resources, money. Often heard in the fields of design and architecture.
Effizient, nicht effektiv arbeiten. Work efficiently, not just effectively. A figure of speech often heard in the German workplace, meaning to do more than reach your goals by doing it efficiently.
Kleine Ursache, große Wirkung. Literally small cause, large effect. A figure of speech pointing out how small things – good and bad – can lead to very significant outcomes. In the German context it is a warning to pay close attention to the details of one‘s work.
Was nicht in die Masse dringt, ist unwirksam. What doesn‘t reach the masses, is ineffective. A quote attributed to Karl Jaspers, one of Germany‘s most influential philosophers of the post-War era. It is often used in discussions about the effectiveness of advertisement.