What does this quote mean?

“The purpose of life is unquestionably unfoldment, growth, advancement”

Trine states his view of purpose directly: life should continue to develop rather than settle into mental or moral stagnation.

Source note: The Higher Powers of Mind and Spirit; Project Gutenberg #28163. The surrounding text describes evolution from “lower” to “higher” in spiritual terms; this is Trine’s philosophical-religious position, not a scientific law of human development.

“the main pleasure of life is the exercise of energy in the development of our special capacities.”

The line makes development itself a source of satisfaction: people flourish, in Morris’s account, when their abilities are actively exercised instead of left unused.

Source note: Signs of Change, lecture “Dawn of a New Epoch”; Project Gutenberg #3053. The sentence occurs inside Morris’s proposed organization of socially useful labor.

“the true joy of existence comes from living to one's highest.”

The sentence locates fulfillment in trying to live at one’s best level of character and capacity, making aspiration itself part of the purpose of life.

Source note: What All The World’s A-Seeking, Part III; Project Gutenberg #14312. Trine’s phrase is conduct-of-life counsel, not a claim that striving automatically removes hardship or produces happiness in every circumstance.

“Let us live up to the fulness of our possibilities each day. Man has only one day of life—to-day.”

Jordan makes development immediate: today is the only day in which ability, responsibility and intention can actually be converted into conduct.

Source note: The Power of Truth, “People Who Live in Air-Castles.” The line is a present-action argument within conduct-of-life writing, not a literal denial of memory, planning or future obligations.

“The Vision that you glorify in your mind, the Ideal that you enthrone in your heart—this you will build your life by, this you will become.”

Repeatedly honored ideals influence choices and habits, so the picture a person keeps returning to can become a practical standard for action.

Source note: As a Man Thinketh, end of “Visions and Ideals”; Allen summarizes the chapter by linking dominant ideals with the life a person builds.

“the freedom for every man to do what he can do best, joined to the knowledge of what productions of labour we really wanted. I must admit that this knowledge we reached slowly and painfully.”

Old Hammond connects useful work with discovering strengths and social needs, while explicitly describing that knowledge as something learned gradually through difficulty.

Source note: News from Nowhere, Old Hammond speaking; Project Gutenberg #3261. The passage is part of Morris’s fictional utopian social argument.