"For what reason did he meditate on schemes so difficult of realisation?

It was one of his axioms that similar meditations or the automatic relation to himself of a narrative concerning himself or tranquil recollection of the past when practised habitually before retiring for the night alleviated fatigue and produced as a result sound repose and renovated vitality." (U17.1754)
"His justifications?

As a physicist he had learned that of the 70 years of complete human life at least 2/7, viz. 20 years are passed in sleep. As a philosopher he knew that at the termination of any allotted life only an infinitesimal part of any person's desires has been realised." (U17.1759)
"As a physiologist he believed in the artificial placation of malignant agencies chiefly operative during somnolence.

What did he fear?

The committal of homicide or suicide during sleep by an aberration of the light of reason, the incommensurable categorical intelligence situated in the cerebral convolutions.

What were habitually his final meditations?

Of some one sole unique advertisement to cause passers to stop in wonder, a poster novelty, with all extraneous accretions excluded, reduced to its simplest and most efficient terms not exceeding the span of casual vision and congruous with the velocity of modern life." (U17.1763)
"What did the first drawer unlocked contain?
A Vere Foster's handwriting copybook, property of Milly (Millicent) Bloom, certain pages of which bore diagram drawings, marked Papli" (U17.1774)

This is a copybook like Milly owned. Vere Henry Foster (1819 - 1900) was an Irish diplomat and educator who relentlessly worked for the betterment of the Irish. He helped build schools in rural Ireland, devised cheap but effective school books, and tried to improve the salary of Irish school teachers. His series of Copy Books, used in Ireland's National Schools, was immensely popular, and over 4 million volumes were printed.
"which showed a large globular head with 5 hairs erect, 2 eyes in profile, the trunk full front with 3 large buttons, 1 triangular foot:" (U17.1777)
"2 fading photographs of queen Alexandra of England" (U17.1778)
"and of Maud Branscombe, actress and professional beauty" (U17.1779)
A SV of Maud Branscombe.
"a Yuletide card, bearing on it a pictorial representation of a parasitic plant, the legend Mizpah, the date Xmas 1892, the name of the senders: from Mr & Mrs M. Comerford," (U17.1780)

from Wikipedia: Mizpah is an emotional bond between people who are separated physically or by death. Mizpah jewellery is worn to signify this bond and the word 'mizpah' can be found on headstones in cemeteries and on other memorials. From Genesis 31: 'And Mizpah; for he said, The Lord watch between me and thee, when we are absent one from another.'
"the versicle: May this Yuletide bring to thee, Joy and peace and welcome glee:" (U17.1782)
"butt of red partly liquefied sealing wax," (U17.1783)
"obtained from the stores department of Messrs Hely's, Ltd., 89, 90, and 91 Dame street: a box containing the remainder of a gross of gilt "J" pennibs, obtained from same department of same firm: an old sandglass which rolled containing sand which rolled:" (U17.1784)
"a sealed prophecy (never unsealed) written by Leopold Bloom in 1886 concerning the consequences of the passing into law of William Ewart Gladstone's Home Rule bill of 1886 (never passed into law): a bazaar ticket, no 2004, of S. Kevin's Charity Fair, price 6d, 100 prizes:" (U17.1787)
"an infantile epistle, dated, small em monday, reading: capital pee Papli comma capital aitch How are you note of interrogation capital eye I am very well full stop new paragraph signature with flourishes capital em Milly no stop: a cameo brooch, property of Ellen Bloom (born Higgins), deceased: a cameo scarfpin, property of Rudolph Bloom (born Virag), deceased: 3 typewritten letters, addressee, Henry Flower, c/o. P. O. Westland Row, addresser, Martha Clifford, c/o. P. O. Dolphin's Barn:" (U17.1791)
"the transliterated name and address of the addresser of the 3 letters in reversed alphabetic boustrophedontic punctated quadrilinear cryptogram (vowels suppressed) N. IGS./WI. UU. OX/W. OKS. MH/Y. IM:" (U17.1798)
"a press cutting from an English weekly periodical Modern Society, subject corporal chastisement in girls' schools:" (U17.1801)
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