Not only could no attempt be approximately made at giving a real and vivid picture of Leighton's remarkable personality were not the three aspects of his nature taken into account, but also if the influences which affected him strongly during those years when his genius and character were being developed were not also considered. His conscious nature and feelings, during the first thirty years of his life, can be best traced in his letters, notably in those to his mother. It is easy to recognise, in reading his mother's letters to him, from whom he inherits the warm tender generosity which made his nature so lovable.
[Illustration: PORTRAIT OF PROFESSOR EDOUARD STEINLE Drawn by Himself]
When at Frankfort, in 1845, he first became acquainted with the most "indelible" influence of his life in that inner sanctuary in which he had hitherto been a lonely inmate. Seven years later, in the Diary he calls "Pebbles," written for his mother, when, fully fledged, he leaves the nest to battle alone on the field of life, he pays a tribute of unqualified affection and gratitude to his master, Steinle, who first unlocked the door to Leighton's full consciousness of the depth of his devotion for his calling (see pp. 61 and 62).
In 1879, the year after Leighton was elected President of the Royal Academy, in the same letter to Mrs. Mark Pattison already quoted from, he writes, respecting the influences which affected his art development: "For _bad_ by Florentine Academy, for good, far beyond all others, by Steinle, a noble-minded, single-hearted artist, _s'il en fut_. Technically, I learnt (later) much from Robert Fleury, but being very receptive and prone to admire, I have learnt, and still do, from innumerable artists, big and small. Steinle's is, however, the _indelible seal_. The _thoroughness_ of all the great old masters is so pervading a quality that I look upon them all as forming one aristocracy."
During the first year when he settled in Rome, in the beginning of 1853, he made the acquaintance of Mr. and Mrs. Sartoris. Leighton's friendship with Mrs. Sartoris (Adelaide Kemble), many years his senior, and one who had ever viewed her art as a singer from the purest and highest aspect, became a strong and elevating influence in his life. Professor Giovanni Costa (the "Nino" of the letters), one of Leighton's most intimate friends from the year 1853 to the end in 1896, wrote of Mrs. Sartoris, referring to the early days in Rome from 1853 to 1856:[11] "The greatest influence on the life of Frederic Leighton was exerted by Mr. and Mrs. Sartoris (Miss Adelaide Kemble), who had the mind of a great artist. Mr. Sartoris was one of the greatest critics of art, and Mrs. Sartoris had a most elevated and serene nature."