Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.

The true value of a human being is determined primarily by the measure and the sense in which he has attained liberation from the self.

I cannot imagine a God who rewards and punishes the objects of his creation [and] is but a reflection of human frailty.

The human mind has first to construct forms, independently, before we can find them in things.

It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

I cannot imagine a God who rewards and punishes the objects of his creation and is but a reflection of human frailty.