Kill one man, and you are a murderer. Kill millions of men, and you are a conqueror. Kill them all, and you are a god.

There are big and little truths, but all belong to the same race.

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.

A body of work such as Pasteur's is inconceivable in our time: no man would be given a chance to create a whole science. Nowadays a path is scarcely opened up when the crowd begins to pour in.

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.

The biologist passes. The frog stays the same.

I still understand a few words in life, but I no longer think they make a sentence.