Ernst Mach Quote

Every candid person will confess that there are many branches of knowledge about which he had better be silent.

Popular Scientific Lectures, On Instruction in the Classics and the Sciences (p. 345)

Every candid person will confess that there are many branches of knowledge about which he had better be silent.

Every candid person will confess that there are many branches of knowledge about which he had better be silent.

Every candid person will confess that there are many branches of knowledge about which he had better be silent.

Every candid person will confess that there are many branches of knowledge about which he had better be silent.