What was it about the privileged male Victorian/Edwardian British writer that led to such a fantastical outpouring of books for children that were to embed themselves so thoroughly that they have stayed with their readers into adulthood?

Dedicated to a foundation stone of western artistic training, this exhibition attempts a celebratory note as the Royal Academy approaches its 250^th anniversary. But if the printed guide handed to visitors offers a detailed overview of working from life, the exhibition itself is a far flimsier construction that never really establishes the purpose of a practice that it simultaneously wants us to believe is thriving today.

Three years ago Rose Wylie won the prestigious John Moore’s Painting Prize. She was 80 years old and had been painting away in relative obscurity for many decades. You might suppose, then, that the prize was given in recognition of past achievements – a reward for dogged perseverance.

Modigliani was an addict. Booze, fags, absinthe, hash, cocaine, women. He lived fast, died young, cherished an idea of what an artist should be and pursued it to his death. His nickname, Modi, played on the idea of the artiste maudit – the figure of the artist as wretched, damned.

Our universe seems to be in a state of equilibrium, neither collapsing in on itself nor expanding ad infinitum. The metaphor used by physicists to represent the delicate balance of forces needed to maintain this happy state of affairs is a pencil standing on its tip. In his sculpture Omega = 1, Steven Pippin miraculously turns the metaphor into physical reality.

Finland is celebrating its centenary this year and the National Gallery's exhibition of four paintings by Akseli Gallen-Kalela (1865-1931) of a very large lake in central Finland is a beguiling glimpse of the passion its inhabitants attach to its scenic beauty, in winter darkness and here, summer night. Finland possesses almost 190,000 lakes, depending on your definition.

What does it take to be included in the Taylor Wessing Photographic Portrait Prize exhibition? This year 2,423 photographers entered 5,717 images: 2,373 of those photographers are left wondering what it takes to make the grade. Remarks from the judges are a little on the Delphic side: "Those we have selected provoked a connection that resonated in all of us."  "It’s always tricky to whittle down to the contenders." "We simply nominated our favourite pictures…".

Ilya and Emilia Kabakov’s Tate Modern exhibition features an installation made in 1985 of a Moscow bedsit, its walls lined with political posters. There’s a gaping hole in the ceiling made when the occupant apparently catapulted himself through the roof to escape the incessant clamour of propaganda bombarding Soviet citizens on a daily basis.

Jules Dalou, Edouard Lantéri, Jean-Baptiste Carpeaux, Charles-François Daubigny, Alphonse Legros, Giuseppe de Nittis?

The Imperial War Museum’s Age of Terror: Art since 9/11 brings together art made in response to the immediate events and long-term consequences of the events of 11 September.