Science is always simple and profound. It is only half truths that are dangerous.

All great truths begin as blasphemies.

There is always danger for those who are afraid.

New opinions often appear first as jokes and fancies, then as blasphemies and treason, then as questions open to discussion, and finally as established truths.

It shows how dangerous it is to be too good

Science... never solves a problem without creating ten more.