Triangles: Taurus Leo Aquarius

Affects humanity in general

[In this triangle] you have a significant and important zodiacal triangle … particularly significant to the fourth Creative Hierarchy, the human Hierarchy. (EA 289)

Taurus
The incentive towards experience in order to gain knowledge
carries the fair jewel which gives light upon its forehead (EA 289)
in the final stage of development demonstrates as the illumined consciousness (EA 488)
Leo
The expression of … experience in daily life and … the effort to justify knowledge (EA 488)
Achievement of self-mastery, personality control of groups (Aquarius). A combination of the will-to-illumine and the will-to-rule.
The will-to-illumine is that which drives all Leo people on to experiment and so to gain knowledge; it is this which links them with Taurus, which ‘carries the fair jewel which gives light upon its forehead’ (EA 289)
Produces true Self-consciousness (EA 488)
Aquarius
The use of experience in order to make the gained knowledge a factor in service (EA 289)
Aquarius takes that experience and the knowledge gained thereby [in Leo], and turns it to conscious use in the service of the group.
it indicates the individual of spirit, of life, and of consecration to the divine expression of service. (EA 488)

It is quite profitable to relate the above qualities with the houses ruled by each sign: the second, fifth and eleventh.

The signs making up this triangle are all from the five which are active in the life of advanced disciples—see:

Esoteric Astrology: 289-90, 488