Much depends on asking the right question at the right time.

O progresso da ciência, tal como uma antiga trilha no deserto, está juncado pelos descolorados esqueletos de teorias rejeitadas, que um dia pareceram ter vida eterna.

Einstein's space is no closer to reality than Van Gogh's sky.

Hitherto man had to live with the idea of death as an individual; from now onward mankind will have to live with the idea of its death as a species.

Newton's apple and Cezanne's apple are discoveries more closely related than they seem.