With knowledge comes more doubt.

Everything has been thought of before, but the problem is to think of it again.

There are men who never err, because they never propose anything rational.

There is no remedy but love for the great superiority of others

Habit is a man's sole comfort. We dislike doing without even unpleasant things to which we have become accustomed.

Passions are defects or virtues in the highest power.

It is much easier to meet with error than to find truth; error is on the surface, and can be more easily met with; truth is hid in great depths, the way to seek does not appear to all the world.