Jupiter
“I grow”
Best quality: Benevolence (kindness) Worst quality: Conceit
Jupiter is the planet of good luck, optimism, success and generosity. Jupiter brings joy to life. Think expansiveness and abundance, as Jupiter is the largest planet in our solar system. Jupiter signifies knowledge, higher leaning, breadth of vision, confidence, charity and good-will, frankness and honesty. Jupiter’s knowledge is on a philosophical level (as opposed to Mercury’s day-to-day cleverness). It is the broad view of the higher mind. Psychologically, Jupiter is the search for meaning or truth. As such, it represents law and justice, philosophy, religion, metaphysics, and education. Jupiter encompasses the urge for self-improvement through participation in the larger whole. It urges you to go forth exploring life. Jupiter's sign indicates what you idealize, what your ethical, religious, and philosophical standards are.
The sign also indicates where you express expansiveness, where you do things on a large scale. Jupiter in your chart shows where you are likely to receive financial and material benefits, and in turn, where you express generosity to others. The House of Jupiter is where we tend to be optimistic, and the affairs of that House usually flow easily. Jupiter’s qualities include benevolence (kindness), wisdom, morality, and spirituality. If negatively placed in the chart, Jupiter’s energy can be manifested as self-righteousness, excessiveness, squandering, exaggeration, over-indulgence, superficiality, and bigotry. However, even when negatively positioned, Jupiter is protective and beneficial. Over-indulgence and excess often lead to learning the lesson of restraint. Even with a negatively-aspected Jupiter, a person will tend to "land on their feet" when problems arise in the areas signified by Jupiter's House.
Interpretations for Jupiter in each zodiac sign are available here: Jupiter in the Signs
Interpretations for Jupiter in each House of the birth chart: Jupiter in Houses