I think in light of the new science of epigenetics Lamarck was much more closer to the truth behind evolutionary biology than Darwin.
I also find that Bergson's views regarding the vital force behind all of life, when combine with lamarck's theories, can open up a whole new dimension of understanding what evolution really is.
Though bergson did not explain all details of how biological evolution worked, in the light of the new understanding his ideas were profound. He believed that at the root of life was a vital force, an intuitive intelligence which guided the process of evolution.
Epigenetic change and mutagenic adaptations are not random chance, they arise from the vital force of life itself, and are an expression of how life is capable of intelligently designing itself in order to progressively evolve in accordance with what the spirit life perceives as the next logical step.
This intelligent force shapes all of life proactively( Darwin was wrong about random chance) Though perhaps when backed into a corner the spirit of survival will throw the dice and gamble on a particular mutation, still in these mutations there may be an element of intelligent design, which is largely overlooked by traditional evolutionary theory.
"Homo sapiens, the only creature endowed with reason, is also the only creature to pin its existence on things unreasonable."
Henri Bergson
