One is also reminded of how in art the tortoise so often overtakes the hare. Not all, but too many of the best writers, composers, and artists of our… - Clement Greenberg

The paradox in the evolution of French painting from Courbet to Cézanne is how it was brought to the verge of abstraction in and by its very effort to transcribe visual appearance with ever greater fidelity.

Perhaps the greatest change that industrialism (along with Protestantism and rationalism) has made in daily life is to separate work from leisure in a radical and almost absolute way. Once the efficacy of work began to be more clearly and fully appreciated, work had to become more efficacious in itself — that is, more efficient. To this end, it had to be more sharply separated from everything that was not work; it had to be made more concentratedly and purely itself — in attitude, in method and, above all, in time. Moreover, under the rule of efficiency, seriously purposeful activity in general tended to become assimilated to work. The effect of all this has been to reduce leisure to an occasion more exclusively of passivity, to a breathing spell and interlude; it has become something peripheral.

Complete honesty has nothing to do with "purity" or naivety. The full truth is unattainable to naivety, and the completely honest artist is not pure in heart.