Notes
Time Enough for Love, a Future History and Lazarus Long novel by Robert A. Heinlein.

The two "Intermission" chapters – Excerpts from the Notebooks of Lazarus Long and More from the Notebooks of Lazarus Long – were reprinted in the June 1973 issue of Analog and the Winter 1988 issue of New Destinies.

The "intermissions" were also reprinted with illustrations by D.F. Vassallo as The Notebooks of Lazarus Long (1978).

The image opposite and the blurb below are from the 1975 New English Library paperback edition, ISBN 0450022439. Cover illustration by Bruce Pennington.

Publisher’s Blurb – Lower Cover
Heinlein, award-winning maestro of the SF world, surpasses himself in this, his most powerful novel. And there is time enough indeed for love, for his hero's lifespan covers 23 centuries. Lazarus Long is "the Senior" – the oldest man alive in the Galactic Year 2053 — the man who is forever young. And Heinlein traces his fantastic life — or lives — through many marvellous identities: from Lazarus Long, who led the first-great exodus from Earth, to Aaron Sheffield, interstellar starship captain, through to Ted Bronson, the time-traveller, catapulted through time back to Earth in 1916.

"Mr Heinlein's technique dazzles so expertly and consistently that one is all but blinded to everything but his superb story-telling."
The Times