In order to continue his mental improvement, to enjoy the sweets of friendly intercourse, and to economize his precious time, Rubens regulated his affairs with a precision which nothing was permitted to derange. He received company at stated times, took regular exercise out of doors, usually on horseback, and it is said that he never painted without having some one to read to him from a classic work of history or poetry. He possessed an extraordinary memory, and understood the ancient and several modern languages, writing and speaking them with ease and fluency. His familiar acquaintance with ancient and modern literature, had enriched his mind with inexhaustible resources. RUBENS’ DETRACTORS. Rubens’ great popularity naturally excited envy, and created enemies. Generous and affable to all, and a liberal encourager of art, he found himself assailed by those who were most indebted to him for assistance. With the most audacious effrontery, they insinuated that he owed the best part of his reputation in the great variety of his works, for which he was celebrated, to the talents of two of his disciples, Snyders and Wildens, whom he employed occasionally in forwarding the animals and landscapes in his pictures. The principal of these vilifiers were Abraham Janssens, Cornelius Schut, and Theodore Rombouts; the first had the hardihood to challenge him to paint a picture in competition with him. Rubens treated these attacks with a dignity and philanthropy that shows his exalted mind, and the goodness of his heart; he relieved the necessities of his accusers, and exposed his immortal production of the Descent from the Cross. THE GALLERY OF THE LUXEMBOURG. In 1620, Mary of Medicis commissioned Rubens to decorate the gallery of the Luxembourg with a series of emblematical paintings, in twenty-four compartments, illustrative of the principal events of her life. The series was painted at Antwerp, except two pictures, which he finished at Paris in 1623, when he arranged the whole in the gallery. These great works, executed in less than three years, are alone sufficient to attest the abundant fertility of his genius, and the wonderful facility of his hand. RUBENS SENT AS AMBASSADOR TO THE COURTS OF SPAIN AND ENGLAND.