Genius Is Only A Superior Power Of

Every Duty We Omit Obscures Some Truth We Should Have Known.

It Is A Matter Of The Simplest Demonstration, That No Man Can Be Really Appreciated But By His Equal Or Superior.

I Tell You (dogmatically, If You Like To Call It So, Knowing It Well) A Square Inch Of Man's Engraving Is Worth All The Photographs That Were Ever Dipped In Acid... Believe Me, Photography Can Do Against Line Engraving Just What Madame Tussaud's Wax-work Can Do Against Sculpture. That And No More. (1865)

I Believe The First Test Of A Truly Great Man Is In His Humility.

Science Has To Do With Facts, Art With Phenomena. To Science, Phenomena Are Of Use Only As They Lead To Facts; And To Art, Facts Are Of Use Only As They Lead To Phenomena.