Of duration in general -- Unorganized bodies and abstract time -- Organized bodies and real duration -- Individuality and the process of growing old

Of transformism and the different ways of interpreting it -- Radical mechanism and real duration: the relation of biology to physics and chemistry -- Radical finalism and real duration: the relation of biology to philosophy

The quest of a criterion -- Examination of the various theories with regard to a particular example -- Darwin and insensible varion -- Devries and sudden variation -- Eimer and orthogenesis -- Neo-Lamarkism and the hereditability of acquired characters

General idea of the evolutionary process -- Growth -- Divergent and complementary tendencies -- The meaning of progress and of adaptation

The relation of the animal to the plant -- General tendency of animal life -- The development of animal life

The main directions of the evolution of life: torpor, intelligence, instinct

The nature of the intellect

The nature of instinct

Relation of the problem of life to the problem of knowledge -- The method of philosophy -- Apparent vicious circle of the method proposed -- Real vicious circle of the opposite method

Simultaneous genesis of matter and intelligence -- Geometry inherent in matter -- Geometrical tendency of the intellect -- Geometry and deduction -- Geometry and induction -- Physical laws

Sketch of a theory of knowledge based on the analysis of the idea of Disorder -- Two opposed forms of order: the problem of genera and the problem of laws -- The idea of "disorder" an oscillation of the intellect between the two kinds of order

Sketch of a criticism of philosophical systems, based on the analysis of the idea of Immutability and the idea of "Nothing" -- Relation of metaphysical problems to the idea of "Nothing" -- Real meaning of this idea

Form and Becoming

The philosophy of Forms and its conception of Becoming -- Plato and Aristotle -- The natural trend of the intellect

Becoming in modern science: two views of Time.

The metaphysical interpretation of modern science: Descartes, Spinoza, Leibniz

The Criticism of Kant