Nothing leads the scientist so astray as a premature truth.
Already at the origin of the species man was equal to what he was destined to become.
Stupidity, outrage, vanity, cruelty, iniquity, bad faith, falsehood - we fail to see the whole array when it is facing in the same direction as we.
What makes our opponents useful is that they allow us to believe that without them we would be able to realize our goals.
There are big and little truths, but all belong to the same race.
A few great minds are enough to endow humanity with monstrous power, but a few great hearts are not enough to make us worthy of using it.