A Collection of Quotes on a Variety of Topics (I): Immortality. Indecent Humor. Indian Summer.

The sentence in boldface is a plain statement of the quote that follows.

Immortality
The True Believer sees himself as belonging to a collective body that will never die.
Immortality 65 He [the individual] has no purpose, worth and destiny apart from his collective body; and as long as that body lives he cannot really die. Hoffer, The True Believer

The best of what we did will outlive us.
Immortality 188 George Eliot on immortality: …whereby that which is most rational and beautiful in our thought and our lives survives us to have an almost timeless efficacy down the years. Will Durant, The Story of Philosophy, Spinoza.

When we are absorbed by what we are doing, we do not think about immortality.
Immortality 1075 Of immortality, the soul, when well employed, is incurious. Emerson, The Conduct of Life: Worship.

There is only a short time in which people are interested in our existence.
Immortality 951 Sadly measure the little, little time, during which our lineaments are likely to be of interest to any human being. Hawthorne, The Marble Faun.

People are content who realize that their greatest memorial is the grass that grows above and around their grave.
Immortality 952 It is a good state of mind for mortal man, when he is content to leave no more definite memorial than the grass, which will sprout kindly and speedily over his grave…. Hawthorne, The Marble Faun.

Indecent Humor
Aristophanes makes indecency merely a part of life with humorous possibilities.
Indecent humor 139 He [Aristophanes] is so frank, so fearless, so completely without shame, one ends by feeling that indecency is just a part of life and a part with specially humorous possibilities. E. Hamilton. The Greek Way.

Indian Summer
A time when the Indians, who retreated from the cold, would again bring destruction to the settlers.
Indian summer 349 It however sometimes happened, after the apparent onset of winter, the weather became warm; the smoky time commenced, and lasted for a considerable number of days...[called] the Indian summer, because it afforded the Indians another opportunity of visiting the settlements with their destructive warfare. Boorstin, The Americans: Colonial Experience