All the factors necessary for service are now ready. Experience and study have supplied something to give, mental discipline and unimpaired physical strength supply the power for service, the broad outlook reveals the need and place of service, and the soul's awakening toward God and the neighbor have supplied the motives for service. (2) _Physical and mental power at the height._ Waste and repair in bodily tissues are balanced during the prime of life. If development has been normal, the will is resolute, and judgment and reason are dominating and wise, for experience has given large data from which to draw conclusions. While the "Golden Age of Memory" is far in the past, the power of retaining new knowledge through the old is strong. To enter upon unfamiliar lines of thought, however, at this time and achieve any mastery is a mark of genius at least for hard work. The soul has capacity now for the highest feelings that can stir the heart of man, yet the character of those it really experiences is determined by what life has been feeding upon. The love, joy, and peace which give glory to maturity and old age grow alone out of thought upon true and pure and lovely things and those of good report. (3) _Development specialized, not general._ Out of the many calls and lines of interest, each life has made choice of one or more, according to taste and circumstances. Along these lines growth and development proceed. It is not that life could not continue the many-sided expansion of adolescence, but growth demands nourishment, development demands activity. The need for the expert, the multiplicity of cares and the force of habit make it difficult to "keep up" along many avenues. (4) _Time of achievement._ Achievement may or may not be that service which manhood owes. The purpose in the task determines that. To souls especially endowed and favorably environed come the riches of intellectual research, of creation in the arts, of successes in the business world. To the many, achievement means only struggle here, but waiting treasures laid up with God. (5) _Time of soul hunger._ The teacher of men and women always faces hungry hearts. If the soul has not found satisfaction in God, the pangs of starvation are inevitably there. If the soul does know God, there is unspeakable longing for a clearer revelation and a deeper consciousness that in the midst of life's weakness and aspiring "God's goodness flows around our incompleteness, Round our restlessness His rest." #37. Opportunities Presented in Maturity.#--But three great opportunities out of the many can be suggested: (1) _The opportunity to be somebody's ideal._ Every successful life is the pattern for some eager, ambitious boy or girl. Did not Paul's exhortation to Timothy look toward this as well, when he besought him to "be an ensample in word, in manner of life, in love, in faith, in purity"?