"Any man could, if he were so inclined, be the sculptor of his own brain ( p. xv)."

"Instead of elaborating on accepted principles, let us simply point out that for the last hundred years the natural sc…"

"The unique method of reflection indulged in by the Pythagoreans and followers of Plato (and pursued in modern times b…"

"This history of civilization proves beyond doubt just how sterile the repeated attempts of metaphysics to guess at na…"

"The intellect is presented with phenomena marching in review before the sensory organs. It can be truly useful and pr…"

"As Claude Bernard has pointed out, researchers cannot transcend the determinism of phenomena; instead, their mission …"

"Knowing the conditions under which a phenomenon occurs allows us to reproduce or eliminate it at will, therefore allo…"

"Now and then philosophers invade the field of biological sciences with these beguiling generalizations, which tend to…"

"There is no doubt that the human mind is fundamentally incapable of solving these formidable problems (the origin of …"

"It is important to note that the most brilliant discoveries have not relied on a formal knowledge of logic. Instead, …"