Science has made us gods even before we are worthy of being men.

The books one has written in the past have two surprises in store: one couldn't write them again, and wouldn't want to.

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

It is sometimes important for science to know how to forget the things she is surest of.

There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.

It is horrible to see everything that one detested in the past coming back wearing the colors of the future.

We must watch over our modesty in the presence of those who cannot understand its grounds.