The defects and faults of the mind are like wounds in the body; after all imaginable care has been taken to heal them up, still there will be a scar left behind, and they are in continual danger of breaking the skin and bursting out again.

There are very few things impossible in themselves; and we do not want means to conquer difficulties so much as application and resolution in the use of means.

It is from a weakness and smallness of mind that men are opinionated; and we are very loath to believe what we are not able to comprehend.

Francois de La Rochefoucauld Quotes