Looking at Taurus zodiac quality, you should first understand that within each of the Triplicities or Elements is found a category known as the Qualities...also referred to as the Quadruplicities, Modes or Common States.
There are three Qualities: Cardinal, Fixed and Mutable. Each Quality addresses the manner of expression which will be displayed by the individual who falls within its jurisdiction, based upon which of the four Elements predominates.
Thus, the Element (either Fire, Earth, Air or Water) will dictate the core characteristics, while the Quality (Cardinal, Fixed or Mutable) will dictate the way in which those characteristics are expressed.
Taurus is a Fixed Quality Sign (a Quality it shares with Leo, Scorpio and Aquarius).
Influence of Fixed Quality on Taurus Personalities
Focus on the accumulation of the material and the seeking out of security
As an Earth sign with Fixed Quality, Taurus individuals inherently focus on the accumulation of the material and the seeking out of security. Such subjects are also moved to guard what they earn or accumulate. Since Taurus natives possess sensuous natures, they enjoy the tactile quality of tangible objects. They care for the property of others in the same responsible manner as if such property were their own and are often found in positions of professional guardianship (such as a museum curator) thoroughly enjoying the prospect of protecting and evaluating the worth of precious artefacts. Insurance is also a perfect industry for the Taurus individual because of this Sign's focus on security.
Oriented to the "here-and-now"
Natives of this Sign are oriented to the "here-and-now" and need to see tangible fruits of their labours. In short, some Signs of the Zodiac have no problem with being famous rather than rich, but this does not apply to Taurus subjects. Being under the influence of a practical Earth Element, Taurus individuals will always prefer to "see the cash."
Fixation on a method
All Earth Signs possess the characteristics of being relentless but in the case of Taurus, this is manifested in a fixation on a method which has been adopted through experience. Thus, if something worked well in the past then, as far as these individuals are concerned, the same will work again and again.
Looking at Taurus zodiac quality, there is an inclination toward stubbornness here, coupled with a tendency to get into something of a rut, but such is the downside of an inherent ability to "stay the course." Fixed Signs are generally greatly valued for their consistency, loyalty, devotion and reliability...to say nothing of being blessed with a patient nature. However, those who governed by Fixed Quality hold very strong opinions and, at times, can be inflexible. Nevertheless, there are some areas of life where such traits are needed and even encouraged.